andrewyuri

I think that Joz is correct - the hum appears when the sub is plugged into a different mains circuit. If that's the case, try running a separate earth wire from the chassis of the system amplifier to a screw on the chassis of the sub amp. This will prevent the difference in earth levels from running through the RCA cable connecting the amp to the sub.

Last month I decided to dip my toe back into the water and put together a speaker based system again. In mid 2018 I had sold my entire system because, following an accident, there were significant issues with my hearing. It's finally getting back to where it was and it's wonderful to be back into audio and, more specifically, music. My first purchase was a used pair of SGR CX4f Mk II and because I no longer had a preamp, I used Roon software to control the volume. That sucked big time - music was compressed and very lacklustre even through these fabulous speakers. I tried a Lightspeed attenuator which was terrific - vibrant, neutral and detailed - but returned it to the seller as one channel was well down in volume. Also the lack of remote volume was putting me off. After talking to Clay about a DAC feeding directly into the active speakers, I purchased a Fein with the low output impedance mod. Once again I was cooking with gas! This modded Fein has really exceeded my expectations not only as a DAC but also with its inbuilt volume control. This is one great piece of electronics. Now that the system has bedded in, I am so far ahead of where I was pre Fein - I had been running a Chord 2Qute which was feeding the SGRs direct. It was fairly good but the Fein offers so much more and makes me believe that it's singing as well as most really good preamps. My priorities are detail and imaging and this system does not disappoint. It's also great to be back into SNA. System: NUC - switch - SoTM 200 - Geek Labs LPS 4 with USB cleaner - Fein DAC - SGR CX4f Mk II - Heaven

Thank you all for your replies but it's now sold pending pickup. I'll contact you if there are any changes.

Thanks for letting me know - I've just PM'd him.

Item: Curious Cable Regen Link 200mm Location: Canberra Price: $95 posted Item Condition: Excellent Reason for selling: Need a new one that is longer Payment Method: Pickup - Cash, Paypal, Extra Info: Nothing to say about this cable apart from the fact it's performance measures up to the hype. Excellent example of the better USB cables. Would also be prepared to part swap for a 0.8m USB cable. Photos:

Item: ALO Studio Six Headphone Amp Location: Canberra Price: $3,950 plus postage and fees Item Condition: Perfect, like new. Reason for selling: NLR, gone back to a speaker system Payment Method: Pickup - Cash, Paypal, Bank transfer Extra Info: Well here it is - one of the grand-daddies of headphone amplifiers. The ALO Studio Six is all valve from start to finish, hand-made and employs point to point wiring. I bought it eleven months ago thinking that I was going to be limited to headphone listening only, but now circumstances have changed and I am going back to a speaker based system. That said, I have loved listening to music through this system knowing that it's quality is of the highest order. One can use many superlatives when describing this amp and they all apply. It's an Incredibly powerful yet nuanced and detailed SET amp with an amazing soundstage. It is a tube rollers delight and I also have several best of breed tubes that I will be selling separately. Don't be concerned that the headphone jacks are single ended with no balanced outputs. I compared this to a Woo Audio running balanced connection into my Sennheiser HD800S and, in my opinion the ALO came out streets ahead. It clearly had more body, a lower noise floor and of course that SET signature. There are also four headphone sockets so the amp can drive four sets of cans simultaneously without any loss of sound quality - perfect for shared listening and GTGs. For those who play vinyl, ALO make a matching phono stage which can be powered off the amps high quality power supply. This amp has been looked after meticulously in a pet-free, child-free home; it's never been over-driven or abused. This would be a terrific alternative to buying a new amplifier. Current RRP is $5.649 and with the falling Aus dollar, this is likely to get higher. The amp will be sold with the original valve set, all of which are unused apart from initial testing. Photos:

Thanks for the great comments guys. Yes, this DAC is in great condition and works perfectly.

Item: Chord 2Qute DAC Location: Canberra Price: $875 Item Condition: Excellent Reason for selling: Funding an upgrade Payment Method: Pickup - Cash, Paypal, Bank transfer Extra Info: The Chord 2Qute is one of the most well known DACs of the last few years and for good reason. It offers excellent bang for the buck in performance terms and build quality is of the highest standard. This DAC handles PCM to 384kHz and also up to DSD 128 in DoP format. At this price it's definitely hard to beat. DAC is in excellent unblemished condition and performs flawlessly. Comes with factory packaging plus the original Chord power supply and manual. Photos:

On hold for dreambrother18 pending pick up.

Item: Balanced headphone cable for Sennheiser HD800/800S/820 Location: Canberra Price: $300 Item Condition: New, unused Reason for selling: My headphone amp is single ended only and does not support balanced connection Payment Method: Pickup - Cash, Paypal, bank transfer Extra Info: This is an authentic Sennheiser cable which uses premium parts and currently retails for $479. There are many comments on various forums about the significant sound improvement on HD800/800S when upgrading to a balanced connection. This cable is unused and therefore in perfect condition - will be supplied in its factory pouch. Pictures:

Item: Teradak DC-30 12V Linear Power Supply Location: Canberra Price: $70 plus postage Item Condition: Perfect, as new Reason for selling: NLR Payment Method: Pickup - Cash, Paypal, bank transfer Extra Info: I have been using this for my Chord 2Qute DAC where it gave a terrific improvement in transparency and imaging. It's ideal for any low power consumption 12V device where a very clean power source is required. I still have the original box so shipping at buyers expense is no problem. Pictures:

Item: Mission MX-4 Floor standing speakers Location: Canberra Price: $590 plus shipping Item Condition: Very Good Reason for selling: Selling for a friend who is down-sizing and moving into an apartment Payment Method: Pickup - Cash, Paypal Extra Info: These speakers are efficient and present a very easy load to amplifiers. Perfect for home theatre and all round music duties! New, these still retail for $1,200 and this pair presents extremely well so a great buy at $590. Still have the factory boxes. Details are: Mission MX 4 Speakers • Floorstanding • Bass reflex enclosure • 2-way speaker • 2×6"(165mm) bass driver • 1"(25mm) dome tweeter • 90dB sensitivity (1w @ 1m) • 25 - 150W recommended amp power • 8 Ohms nominal impedance • 44Hz - 20kHz frequency response • 2.0kHz crossover frequency • Dimensions 935 x 206 x 360mm • Net weight: 23.7 kg Pictures:

Hi Huckles, I live in Canberra so can pick up tomorrow and pay cash. Regards, Andrew

I have always used them in the same direction - that is in the direction of the writing on the heat shrink. Directionality in cables is a controversial thing as the signal is AC and not DC but I play it safe and stick to the convention of maintaining the same directionality always. A

Item: Kimber Cable KCAG Silver Interconnects Location: Canberra Price: $490 plus postage Item Condition: Like New Reason for selling: NLR - sold my system Payment Method: Pickup - Cash, Paypal, COD Extra Info: These are beautifully made and terminated with WBT 0147 RCA plugs. Sound quality exudes air and transparency with incredible amounts of detail. Length is 80cm and in perfect condition. This model is currently selling here in Australia for $1,501. http://www.jdaudioonline.com.au/index.php?main_page=product_info&cPath=66_70&products_id=185&zenid=5f2b59e7dcc38d588e9bf3b05f757d53 Pictures: