This topic is now closed to further replies.
Recently Browsing 0 members
No registered users viewing this page.
Item: Western Electric 420a >> 12AX7 or 12AT7 Tubes with Adaptors NOS - 3 pairs
Location: Sydney East
Price: $135 per pair plus postage. Without adaptors $110
Item Condition: NOS perfect
Reason for selling: NLR
Payment Method: Pickup - Cash, Paypal, Bank TT
For sale are these great sounding Western Electric 420a /JW 5755 NOS tubes which when coupled with an adaptor (included) function as a superior 12AX7 or a 12AT7.
They are much better in many ways than other 12AX7s I have tried, including: Mullard, Telefunken, Amperex and any Chinese tubes (Psvane etc).
The most obvious improvements came in bass drive and resolution. Greater timbral information and texture is evident throughout the mids and bass. Glorious textural information not experienced with any of the tubes mentioned above. Dynamics are scary. Clarity is excellent.
Designed for very low microphonics…
The WE 420a "features special cathode springs which reduce microphonic response. This characteristic is controlled by a "microphonic stability" test for balance in which the tube is tapped at shock levels of 400 - 600G." Very fine wires (springs) just above the top mica can be seen in pics.
The specs are a little different from a 12AX7 which has an amplification factor of 100, 12AT7 is 60, and the Western Electric 420a is 70.
I have tried the Raytheon 5755 equivalent and as expected the Western Electric sounds better and is reliable (the Raytheon is not). WE is the real deal!
I guarantee these will be keepers irrespective of the tubes you are using.
Happy to demo against Mullard and Psvane or your own tubes to serious buyers.
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
Sr.No.206028 T1=Ia=2.0ma Gm=1500
Sr.No.768632 T1=Ia=2.2ma Gm=1500
Sr.No.769203 T1=Ia=2.1ma Gm=1500
Photos: Advertisements without photos of the actual item will not be approved.
Item: Woo Audio WA22 Balanced Headphone Amplifier & Tubes (see below for details)
Location: South Yarra, Melbourne
Price: $2500 (including upgrade tubes)
Item Condition: Very Good/Excellent
Reason for selling: Not Enough Usage and need funds
Payment Method: Cash, Bank Transfer, PayPal
The Woo Audio WA22 is a fully balanced, Class-A triode driven headphone amplifier. This is a black unit with a stepped potentiometer which was manufactured in 2014 and remains in excellent condition. The current unit retails for $3799.
For the last 2 years I have been deciding between this amp and my Violectric V281, however since I have shorter listening sessions these days (not letting the tubes warm up much) and my system is now permanently based around my PC (which introduces ground loop noise which tube amps are more sensitive to) I have leaned towards using the V281 more often. And as I'm not giving the WA22 proper usage it deserves, I have decided to put it up for sale.
The images show how the amp is in great condition (save some dusting) and I am including my favourite bunch of tubes and adapters which cost me more than $700. The included tubes are a Cossor 5U4G rectifier, 2 x 2 RCA 6BL7 (matched quad) power tubes via adapter, and Tung Sol 6118/6SU7WGT driver tubes.
I did a whole bunch of tube rolling to arrive at this configuration! I actually have a whole bunch of tubes I collected for this amp (5U4G compatible, and 6SN7/6SL7 compatible, 6BL7/6BX7 types) that I'm able to sell, so I could knock off $400 from the asking price by including a Brimar 5Z4GY rectifier and GE 6SL7 drivers, or I could stock you up with extra Cossor 5U4G rectifiers, or even give you a choice of drivers including Ken Rad 6SN7's, RCA grey glass 6SL7's, and Brimar 6SL7GT's. Best to PM me for details about those.
Pickup is available in South Yarra, Melbourne and I am able to post Australia wide at your expense. This would also be a great match with the Gieseler Groß DAC that I am also selling!
Item: PAD Luminist Revision Speaker cable Spade-Banana
Price:$ 800 $700
Reason for selling: NLR
Payment Method: Pickup - Cash, Paypal, Can Post.
Extra Info: This cable is excellent in price and performance ,give you nice warm sound and beautiful sound stage.Lot of reviews on the web.