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Found 28 results

  1. Item: Vintage Siemens e83cc (12ax7, ecc83) triple mica tubes x 4 Location: Perth WA Price: $390 for all four tubes. Free post within Aus (only for purchase of all four). Item Condition: test NOS, low noise Reason for selling: too many tubes Payment Method: EFT, PayPal Extra Info: These are the much sought after ‘triple mica’ Siemens 12ax7 Tubes made in the Siemens & Halske Munich plant in September 1963 according to the acid etched codes on the glass. The e83cc was designed to be a very quiet, long lived and and anti-microphonic tube. These four are indeed extremely quite, transparent and crystal clear in my phono stage and preamp. They tested NOS when I bought them about 6 months ago. I’ve put a couple of hours on them at most. The test results provided by the seller I bought them off are as follows (and marked on the boxes - see photos). Tested on an Amplitrex AT1000 Sr.No.261106 T1=Ia=2.0ma Gm=1500 T2=Ia=2.0ma Gm=1500 Sr.No.206028 T1=Ia=2.0ma Gm=1500 T2=Ia=2.1ma Gm=1500 Sr.No.768632 T1=Ia=2.2ma Gm=1500 T2=Ia=2.3ma Gm=1500 Sr.No.769203 T1=Ia=2.1ma Gm=1500 T2=Ia=2.2ma Gm=1500 Photos: Advertisements without photos of the actual item will not be approved.
  2. I stumbled across this today. A warehouse in America, I think, full of vintage tubes. Don't know anything about it other than it looks impressive. https://m.facebook.com/story.php?story_fbid=2565884606817994&id=258976134175531
  3. Item: PS Audio BHK Signature Preamplifier (silver) with Tungsram PCC88 tubes and stock tubes Location: Melbourne (Dandy ranges) Price: $6k ---> now $5k Item Condition: Excellent 9/10 Reason for selling: Upgraded Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: One of the best pre's I've owned before the new addition. This unit is also a limited edition pre, signed in gold by Bascom.H.King himself (see photo's). It will come with a box of old tubes x 20 (not tested) as well as an NOS set of Tungsram PCC88/7DJ8 tubes (~150 hours), the stock tubes (~150 hours) and a pair of NOS GE ECC82/12AU7 tubes with D ring getter (~20 hours). The BHK was just edged out in a couple of areas by an AVM PA8 pre which costs twice as much with additional input and output cards. This and the user adjustability of the new pre being upgradeable with new modules such as tube output, tuner, tone control, phono and dac cards as time and money permits has led me to sell. Read the reviews and hype on google for more info on the BHK, it is a very detailed and dynamic pre with a midrange that keeps up with pre's twice as much. One of the areas the BHK kept up with the AVM. That and the fact it has HT bypass, dual outputs and 5 inputs all user adjustable and the tube rolling for different flavours of sound is why I purchased and loved it. Will come with all accessories, boxes and manuals. Can ship if there is interstate interest after cleared funds via Paypal (as friend) or add 2.7% via Paypal (when paying for an item or service). Shipping is at your own risk and I'll ship as per your request. Otherwise cash on pick up preferred. Specs from the website: Zero-loss vacuum tube input stage User accessible switch allows both 12 volt and 6 volt tubes to be used Differentially coupled balanced MOSFET output stage All through hole construction (no surface mount parts) PRP resistors in signal path 5 RCA Single ended inputs 5 XLR balanced inputs Single ended and balanced outputs Single ended and balanced outputs can be used together or separate Fully balanced input to output High current oversized power transformer Fully regulated power supplies using BHK designed MOSFET discrete voltage regulators Full BHK designed zero feedback, discrete MOSFET headphone stage Remote control Front panel standby button for vacuum tube stage -3dB greater than 200kHz Volume and balance through a revolutionary new combination of gain and attenuation control Two output DC control triggers Easy access to tubes if you want to roll with different ones Each input can be configured as a HT bypass Pictures:
  4. ITEM: PS Audio BHK Preamplifier Location: Brisbane Price: $6500 plus postage Item Condition: Excellent Reason for selling: Replaced three big boxes with an integrated amp Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Bought recently from fellow SNA member. This is the best preamp I've ever had. Every reviewer agrees with this. Moved apartment, decided to reduce to an integrated amp. Consider putting it into storage as there in nothing better around for this price. Info: https://www.psaudio.com/bhk-preamplifier/ Reviews: https://www.stereophile.com/content/ps-audio-bhk-signature-preamplifier http://www.audiophilia.com/reviews/2016/6/18/ps-audio-bhk-preamplifier https://www.soundstagehifi.com/index.php/equipment-reviews/1028-ps-audio-bhk-signature-preamplifier http://audiofi.net/2018/06/ps-audio-bhk-preamp-bhk-250-power-amp-the-best-for-the-price/ https://positive-feedback.com/audio-discourse/ps-audio-bhk-signature-preamplifier-directstream-dac/ https://darko.audio/2016/04/ps-audio-ready-bhk-signature-pre-headphone-amplifier/ http://www.theabsolutesound.com/articles/bhk-signature-preamp-includes-world-class-headphone-amp/ Pictures:   
  5. Item: Audio Space AS-8i Stereo Tube Integrated Amplifier Location: LWA HQ 64 Burns Bay Road, Lane Cove, NSW 2066 Price: $1300 Item Condition: Very good Payment Method: Cash, Paypal, Credit Cards, Bank Transfer Delivery: Available anywhere in Australia, POA Extra Info: Superb sounding tube amp has just had an extensive service from us receiving full replacement of all valves. Input Impedance = 250Kohm (RCA) Output Impedance = 4, 8 Ω Output Power = 55W×2 /CLASS AB2 P-P(ULTRALINEAR) *70W×2 MAX. 28W×2 /CLASS AB2 P-P(TRIODE) *38W×2 MAX. Damping Factor = > 5 Frequency Response = 20Hz-30KHz ±1dB T.H.D.: < 1% 20Hz-20KHz (REF. OUTPUT) Total Gain = 29dB Input Sensitivity = 300mV-600mV S/N Ratio = > 93dB (HUM NOISE <3mV) Channel Balance = < 1dB 20Hz-20KHz (MAX. VOLUME) Channel Sepration = > 65dB 1KHz-3.3KHz Vacuum Tube = V1,V2,V3,V4: EL-34(6CA7)×4 - V7: 12AX7(ECC-83,5751,4004) ×1 V5,V6: 12AU7(ECC-82,6189,4003)×2 Dimension (L × W × H) = 410mm × 320mm × 190mm Weight = N.W.:18kg Pictures:
  6. I have recently got into the wonderful world of valves — KT 120 — after switching from an Elektra power amp and GK1 Swift pre. The new amp sounds really good — spacious, detailed, dynamic — with most of the stuff I listen to, acoustic, voice, strings, orchestra etc. BUT I'm having trouble with some jazz / brass. The problem seems to be restricted to a frequency range just below the top. Given that I listen to quite a bit of wild horn players — Davis, Ornette Coleman and Coltrane et al — this is not so good. No doubt some will say these guys are all a pain in the ear, anyway. Its certainly music with plenty of attack and I don't want that crazy energy tamed - but it has become very hard to listen to. Even Miles Davis' Sketches of Spain, for example, is screechy and quite nasty in places. I have muted it a little with different interconnects but its still not right. I use CDS, vinyl and streaming and its not source specific. Speakers are Proac 1s and B&W CDM7 — both around 20 years old and will be replaced shortly. Any KT120 listeners here have similar problem? Do different KT 120 makes have significantly different voices? Any suggestions, brains trust? @darth vader, @Red MacKay, @Martykt, @Luc, @djb, @andyr, @BATMAQN
  7. For as long as I've had valve amps I've been pondering this question. Every reference I can find online talks repeatedly of the fact that power/filament cycling is the main determinant of valve life and that valves in domestic applications almost never fail due to operating hour failure. Many newer valve amps come with tube hour counters these days, but if the above fact is true, then tube hours is really only a surrogate marker of number of power cycles. My first valve amp I had on for 8+ hours a day for years and I calculated the valves had lasted 6000 hours even though they were said to last about 2000, and I never once changed the valves. The number of power cycles was the same as if I'd only played it for 2 hours a day, though the hours were many more. I didn't get a chance to try new valves to see if it sounded different but after many years of operation it's impossible to know if there was any gradual deterioration of sound happening so slowly that by the end of that time it was substantially diminished and I'd never noticed. Clearly leaving preamps and more so power amps on indefinitely is extremely wasteful, and new tubes aren't that expensive compared to the electricity costs of running say 500W of idle current 24/7 so it doesn't make sense to leave them on permanently. What are other people's thoughts on this?
  8. Item: Matched pair of TJ Full Music 45/n mesh-plate SET tubes - Near New! Location: Sydney Price: $200.00 Item Condition: Near new, perfect. Reason for selling: Not used, downsizing valve collection. Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: These TJ Full Music 45/n mesh-plate SET tubes came stock with my tube pre-amp. They are great sounding tubes, and look super great too with their large balloon shaped glass envelopes and the way the filaments light up the plates. I have since amassed a large collection of other 45 (and other) tubes and am now wanting to downsize the collection. These TJs have at most 150 hours on them (light use a couple of times a week for first ~6 months of owning the pre-amp). So these tubes are pretty much still brand new. They've been stored safely in their original boxes for the last few years, unused. I just plugged them in now to make sure they still work , which they do perfectly ! (see pics attached). Come with their original boxes and paperwork (again, see pics attached) I will post to anywhere in Australia using Express Post with tracking and extra cover. Buyer to pay shipping costs. Pictures:
  9. My previous power amp I always just got it biased by the people who sold me the tubes and have to admit to have never adjusted them myself afterwards being scared to touch it while it was running. My new power amp came with instructions for biasing the valves and a tool to do it with. I checked the bias shortly after installing it and everything was nigh on perfect. After reading a reviewer say he checks tubes at 0, 100 and 200 hours, I then checked it again after 200 hours clocked up on the tube counter and most had drifted down slightly (.5-1mV) and I adjusted it. That's certainly not enough for a noticeable sonic difference and while I've read lots about how often the bias should (or should not be checked), I'd like to hear from others with tube amps regarding how often they check their biases.
  10. Item: Speaker Boxes for 12" full range drivers Location: Canberra Price: $350 Item Condition: Cosmetically as you can see, a bit nocked around superficially Reason for selling: No room for them Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: This is project which is beyond me now due to the need to move somewhere smaller rather quickly. These boxes were made by Peter Campbell, who is well known in Tannoy circles for putting up the first Aus Tannoy page,. They are 1" MDF and heavily braced. They have 2vents for tuning, although on one speaker they have been covered over,- it means you can compare vented versus sealed cabinets before settling on your preferred.They come with some sheets wool insulation, which you can experiment with. The cabinets are 35x57x105 cm. They are running some magnificent Phillips studio monitor coaxial- one of the best wizer speakers ever made, and my god,they sound amazing. So close to Tannoys. They could probably do with some further tuning , and are an extra $300 if you want them. The work superbly with JBL d123's too if you can get them (the ones designed for front fitting). The final shots are the inside, so you can se how solid the bracing is in each. They are apt rough on the outside and stained with a fairly thin wash stain. Very easy to paint or stain over (or whatever) Die to the weight and size these are a pick up job, fr anyone with a van, ute or trailer, and its only 3 hours down the highway from Sydney (and whilst here you can check out the great museums etc) In the pics they are shown with Richard allan, but they are not included Pictures:
  11. Item: Altec 802-8D Horns and Compression drivers Location: Canberra Price: $1000 neg Item Condition: Cosmetically a bit rough but should be fine Reason for selling: Not needed Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: These came from the recording studio at the Canberra School of music. I am not sure how to text them as I presume I need a crossover so as to send the right frequencies through. This seems a fair price, they have been listed for up to $4000 on eBay (although that might be an optimistic seller) I can bring them to Sydney or post them - going to SydneyAugust 3-10 Pictures:
  12. Item: Matched Quad of KT120..........Matched Quad of Mullard reissue KT88 Location: Melbourne Price: 4 x KT 120 = $220. 4 x KT88 = $200 Item Condition: less than 150 hrs old. Matched quads from Lucas Miles Audio. Reason for selling: tried them out on my Leben CS600 sticking with EL34 Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: These are in perfect condition and working order. If anything they have not burnt in. Pictures:
  13. Item: Altec lansing Studio Monitors Location: Canberra, can deliver to Sydney, Newcastle etc Price: $1400 Item Condition: excellent Reason for selling: No Longer needed Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: These are in rock solid cabinets, they weigh a tonne- well a hell of a a lot each, feel like that are made of concrete, although probably not. The sound of these babies rivals Tannoys and Quads, with startling clarity and presence. My apologies for delays with the photos, both phone and computer playing up. I only have am imperial ruler to hand (appropriately) 24" High. 20 1/2" across and 15 1/4" deep. I am can deliver these to Sydney, maybe even Newcastle, or anywhere else 3-5 hours away from Canberra. Freight with pack and send to Bris would be around $360 Pictures:
  14. Item: Bill Crampton Passive pre Location:Canberra Price: $160 Item Condition: Very good Reason for selling: Surplus to needs Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Bill is well known on this site for his great work. This pre is dead quiet and ideal for using with a noisy (relatively) valve power amp. It even improved the clarity of a NAD amp. You can run 2 sets of power amps (One from a balanced output) In addition to 3 inputs at the back it has one at the front for attaching portable (or any) devices. The input and volume have separate click dials for each channel. It is something of a hair shirt experience, so fits well in aspects of the audiophile experience. I bought this from a Bill a few years ago, but I don't really need it. I will consider offers. I can possibly deliver it to Sydney, and can post it cheaply as its very light. Further info: Alps continuos pots Mono/Stereo switch balanced out out (just one, but you can get connectors for stereo) to enable connecting another amp. When I first listed it, one respondent thought it was a steal at $200, but I have dropped the price even further now Pictures:
  15. Item: Tung-Sol KT-120 matched quad Location: Canberra Price: $190 plus postage Item Condition: Like new with minimal use Reason for selling: Not needed Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: I bought this matched quad to use in my PrimaLuna power amp about three months ago. They definitely have more bottom end weight and top end air than the EL-34s that came with the amp but given my diet of mainly acoustic instruments and vocals, I think I prefer the original tubes in my system. These tubes have about 50 hours use only. Pictures:
  16. This DIY 6V6 single-end, ultra-linear (SE UL) valve power amp was originally designed from the ground up by an electronics engineer in Seattle who has a passion for valve amps. The amp is based around all Australian made Mini-watt valves which lived under a house for over forty years. The base is varnished Merboo and top and bottom plates thick gauge Al. Paint is gloss black epoxy enamel. I wanted the sound of an early 6V6 amp so solder from the 60s with copper in it was used plus all carbon film resistors. Tag boards hold the parts and all wiring is point-2-point. Russian PIO caps are used in the inter-stage. Power transformer is mounted on rubber grommets to control vibration. Three heavy solid brass gold plated cone feet secure the amp. The power transformer is Hammond and OPTs 15W Edcors sprayed black. Tube compliment; Black glass 6V6, 6SN7 and 5U4GB. The power supply is split from the first Russian PIO cap into two Hammond chokes and 2 X 100uf filter caps plus a third stage with 450uf 400V additional filter caps. Power filtering is three stage. The dual power supply split is maintained throughout the whole amp. There is a RFI\EMI power filter internally and ferrite cord choke on the power cable. Power is 2.6W RMS. http://retro-thermionic.blogspot.com.au/2014/06/black-lace-all-ozzie-valve-6v6-power-amp.html Item: Black Lace tube power amp Location: Langwarrin Price: $770 - price drop with improved and quieter power supply. Item Condition: As new - 10\10 Reason for selling: Too many amps and more on the way Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Acoustic instruments really shine with this amp and voice is exceptional. It will rock with the right speakers. Speakers of about 90db efficiency will produce good volume depending on music type. I have used this amp with speakers of 87db efficiency with good results. Has a clean almost SS sound but with a classic tube amp feel. A neat and beautifully crafted amp. NOTE: Now with NOS Trigon (English) black glass 6V6 and NOS red base Sovtek 6SN7. Sounds even better, more detail but has retained the rich tone these tubes are renowned for. No additional price. Original tubes included. ELECTRICAL DISCLAIMER This product has not been manufactured by a qualified individual or company, therefore contains electrical circuits that do not necessarily comply with Australian Standards. I understand that as the seller, I may be liable to repercussions in the event of equipment failure. By advertising and selling this product, as the seller I also agree that I am solely liable, and the publisher of this website takes no responsibility for any injury or death resulting from, whether directly or indirectly, any accident that may happen as a result of the failure of the product being sold. If in doubt, seek the services of a qualified electrician to inspect the product to ensure it is safe for use. Pictures: Edited January 15 by mwhouston enikoy, misternavi and SETSergio like this
  17. Hi All, I'm building a modest system for the office and thought I'd take the opportunity to do some testing and reviews. It's not my main system, so it's focussed on being modest and more practical. The challenge is that I have a small office, approx 2m wide x 3.8m long x 2.4m tall. It's going to have some stuff taken out of it, but currently it's crammed with two desks, two filing cabinets, three bookshelves and a set of cupboards. My desk is at one end with the speakers firing down the length of the room, in the opposite end there's a window and there's no absorption in the room at all so it's really 'live'. This setup is used for youtube, netflix, background music and occasional relaxed / immersive listening. The goal of the system is to have something I can turn on and off without really worrying about it, something that will be relatively small, and be musical and help me unwind and relax. As many of you may know, my tastes run towards elaborate valve amps, large high-efficiency speakers, and crazy DIY, however the size restrictions in this room mean that I can't go that way, so a different approach is required. Each element of the system will have several options, and i'm planning to do reviews and comparisons of each element Transport This will be my mac air playing music through iTunes. I do also have an acer netbook running windows / foobar that I can test here, although the prospect of having another notebook setup on the desk isn't wonderful as it's a small desk already. DAC Option 1: Mac air headphone out Option 2: Acer netbook headphone out USB DACs Option 3a / 3b: SB Live External sound card Option 4a / 4b: Ebay PCM2704 DAC circuit-board (IIRC, I can't find it right now!) Option 5a / 5b: Ebay PCM5102 TDA1308 circuit board (link) The reason I have options A and B for the USB devices is that I also own an AQVOX USB power supply (link). This is a device that you connect between the computer and the USB device which acts as a separate PSU for the USB device by replacing the computers power supply with its own. It's a linear power supply so provides a clean and quiet power supply to the USB devices. I will review each of the USB devices with and without the AQVOX device. Option 6: I also have a custom valve circuit that uses the output of the DAC chip on a DAC circuit board and has a valve output circuit. I expect this will be better than using the onboard or integrated op-amp based output circuits. If this is the case and one of the external DAC boards is the winner out of the above, then I will install that DAC board into this device. Amplifier Option 1: My custom made gainclone-style amplifier. This is not really a gainclone as I've converted it to be a balance of voltage and current amplification. More on that later when I review it. Option 2: I have engaged Eric Mcchanson to build a custom 6L6 tube amplifier for me. It's based on this model (link), however I have asked Eric to build it with a different circuit. I'll likely also do some valve reviews with it as I tune it to my tastes. More on that later when I review it. I also have an elaborate 3-box 6-PSU 300B SET amp in my main system that I can compare these amps to. It will be completely unfair, and obviously not able to be used in the office system, but it'll serve as my reference. Speakers The speakers I will make are based on the "SEAS Prestige T18REX/XFC (H1353) 7" Coaxial" drivers (link). These are co-axial speakers, so the tweeter is mounted in the middle of the mid/woofer. This creates a kind-of point-source speaker which is desirable in such a live and small acoustic environment. More on this later too. The other element in this review will be the JBL LSR 305 active speaker (link). This is my current computer sound setup. They are a powered 2-way bi-amped bookshelf speaker with a constant directivity tweeter. The amps in these speakers are digital / switching and although they sound good, I suspect they'll get creamed in terms of subtlety from the valves. The speakers in my main setup are a 1.5-way with Coral Beta 8's as main speakers with Coral Beta 10's as woofers to augment the lack of bass/lower-mids in the 8's. These speakers are 95dB+ efficient so should reveal the low-power performance of the 6L6 and gainclone amps. SPL / Volume requirements The astute amongst you will have noticed that some of these options have radically different output volume capabilities. The JBL powered speakers are capable of outputting significant SPL and the valve / seas combination will have considerably less output capability. I did some research on mobile SPL apps, and found a CDC article comparing the accuracy of various apps (link). I ended up purchasing the NoiSee app (iOS / iPhone) and did some testing. In this room, my listening level with the JBL speakers was consistently at 75dBA average with peaks around 96dBA, this was with several different styles of music, other styles averaged less but kept the same peaks (e.g. blues). If I have done my calculations correctly, each option in this system should be capable of 95dBA peaks and should be unstressed by 75dBA average levels. I know how long these threads can get, and i'm realistic about how long it will take to get all this stuff built and tested so i'm aiming to update this first post with developments as they occur. I'm excited!! ------------- Links to posts: EDIT: initial impressions: XMOS vs MacAir headphone out (link) EDIT: speaker box calculations and initial thoughts (link)
  18. I think it is time that this amp got its own thread, I don't like Hijacking existing ones. Here it is so far: My newish amp, a 1960's Allen 40 Watter. Ready for a doing up, I'll fit binding posts RCA's and Balancing Trafos for input. It is 110 Volt which is ok . Here's a coupla pics of before. It's alive, alive I tell you! The Allen lives..... 50 plus years of gentle drying for the electros, might have to replace one or two. The workmanship and general attention to detail is outstanding in these old amps. I wish mine was this good. Beautiful work. I think I'll leave this unmodded, it's a shame to bugger up another's work in the name of somewhat questionable improvement. I will replace the components that need it though.
  19. Item:1-Micrex R-1 Preamp and two Micrex P-1 Power amplifiersLocation:Darwin NTPrice:$4000.00 ONOItem Condition:Very goodReason for selling:Owner has passed away,wife does not want themPayment Method: Cash, Paypal, COD OnlyExtra Info: Micrex P-1 Valve-Mosfet Hybrid This unusual hybrid mosfet-valve triode amplifier is a creation by Mick Maloney of Supratek fame. The Micrex brand is now owned by Sonique Audio of South Australia. These amps were released to rave reviews around 1994, and targeted the Australasian market. They captured everyone's imagination at the time with their beautiful styling and good sound. The Micrex P-1 is a hybrid design delivering 75w/ch from two pairs of nice sounding Hitachi mosfets driven by EL34 valves in triode mode. The amp is robustly constructed and is designed to be stable into most speaker loads, circuitry is simple and made to last a lifetime. The Micrex sounds surprisingly nice, an excellent marriage of tube and solid state virtues. While not totally tubey sounding, it does hint at valve sweetness and harmonics with the added advantage of excellent s.s drive and composure. The Micrex has plenty of clarity, good separation and images well. It has no trouble driving Apogee Stages or my ESL-3 electrostatic speakers (although, the heat sinks do get quite warm on these difficult speakers). Pictures:
  20. Item: Pair Cifte/Mazda 12AU7A/ECC82 EXPLocation: BrisbanePrice: $100 + postageItem Condition: UnusedReason for selling: Not neededPayment Method: Pickup - Cash, Paypal, COD OnlyExtra Info: Bought as a matched pair, they were advertised a new and unused. Been sat in a cupboard for the last 2 year unused and I now have no need for valves in my system. Pictures:
  21. Some good reading here..... http://theartofsound.net/forum/showthread.php?44432-State-of-the-Vacuum-Tube-Industry-2016
  22. Hi all, Just wondering if anyone here can advise on what good or bad results you've had with current production EL84's? They will be used in a Leak Stereo 20 power amp. Ones of interest so far are JJ's and Mullard re-issues but I've only just started the search so any suggestions much appreciated. If there was a Winged C el84 I'd be onto that as I've found there el34's and 6L6's to be excellent but as far as I know Svetlana never made Winged C el84's. Cheers, Legs11
  23. So last night my venerable AI500 decided to blow. Very sudden; I noticed one of the EL34s was glowing bright orange, then within 30 secs it went purple, then pop! Fair amount of smoke from the back of the amp. I've had an EL34 go bright orange before and have just replaced the quad set of valves, but never anything like this. Any idea of what's gone, aside from the tube, much appreciated. Also any recommendations for a brand of EL34, I might steer clear of Electro-Harmonix from now on...
  24. So, how do you store your valves? Recently I have been collecting some valves for upcoming amplifier builds and while some came with their original boxes, the bulk Russians that I purchased came wrapped in plastic without any boxes (not complaining - they were like $3 each landed here). I could clog up a couple of drawers or put them in a box to be lost in the shed or I could organise them so that I knew how many were on hand. So yesterday, while the rest of the family were off annoying the horses I re-purposed a box that was gathering dust in the shed and made it into the new "assisted living for senior valves" home. The idea is to keep the variants that I use together in one simple place so that I don't have to go searching when one of them needs a zimmer frame or needs to be buried, and also to keep them from collecting dust living in the open. This is what I came up with...
  25. Has anyone else built anything with either a 6N7 (not 6SN7) and or UX-171A? I have a preamp I made with a pair of 6N7s and a power amp with pair of UX-171A. 6N7 metal can tubes are plentiful and cheap and make excellent preamp tubes. Lots of bottom end. Also interested in finding out if anyone has built a transformer coupled EL34 amp. That is using an inter-stage tranni. I have one cct. but wondering if there are others out there. Or if someone has built one and what they think of the performance.
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