Sale pending

Selling a slightly used Audirect Beam4. Will come with all stock packaging and accessories. Please specify what cable would you like it with - USB-C or Lightning.

Selling a pair of Moondrop Blessing 3 IEMs. Comes with all of the tips bundled. Only M-size tips are slightly used, but with no visible marks.

60C on the transistors isn't too crazy.

If we substitute KSA1156/KSC5026 for KSA1381/KSC3503, then it should be buildable now. The THPS should have all of the parts readily available as well. With say OPA445 and everything running from +/-30VDC, a single GRHV100 and GRLV should power it all. Of course, there's still the -5VDC, so a...

As I've sold my CFA3 due to not using it fully (my headphones can't have a BAL connection), my mind has dwelt on the KG Tube Hybrid circuit. It's a 6DJ8 front end powering a half of the CFA3 darlington output for SE duties. Needs only one 6DJ8, so tube shortage shouldn't be much of a problem. At...

I’m super happy that you like it! I really built the amp with most upgrades I could think of, so it should display the best of the CFA3 design. Too bad I didn’t use it enough to justify keeping it. Might build the tube pre one next.

Very pleasant to do business with. Paid promptly via Transferwise. My highest recommendation!

Due to a rig downgrade I'm selling my beloved Schiit Yggy. It's the OG version with A2 boards and Gen 5 USB input. The only downside is a strange blemish on the top cover. It appears at certain reflection angles under bright light. I tried my best to clean it off and... accidentally cleaned off...

I don't see why not. The amp can be used for driving speakers, headphone sensitivity is much higher.

I'm located in Latvia. I don't like the idea of running speakers from it, but something very sensitive prolly won't hurt. For a serious buyer I'd consider doing it, however it will cost you.

Pretty sure this was the amp that started the craze - the venerable KG Current Feedback Amplifier 3. Highlights: Fully balanced, fully discrete and Class-A Proper dual mono with two PSU's and toroids with brass mounting hardware to keep ferrous stuff out of the core Matched Toshiba 389BL &...

Made it myself. Neutrik connectors, Klotz cable and my gf’s nail polish!

Selling my beloved RME ADI-2 Pro AE because my active speaker system has moved to fully digital. I won't name the plethora of features this thing has, if you're looking at it, then you prolly know what you're getting into. Technically it works like it did on day zero, but the lettering on the...

Yes, more or less. CFA3 has a bit stripped down CFA modules, compared to the CFA2. Pretty much. If you only want SE, I'd prolly go with 2xCFA2. Want only BAL? 4xCFA2 is a legit choice. Want SE/BAL natively and don't need ZF? Get one of the input stages and hook 2xCFA2 per channel.

The quad CFA2 ensemble will only take and output BAL signal. The CFA3 has a completely different input stage and it can be built to use no negative feedback.

Sometimes it also ends up being whatever it wants to be.

Going to SMD components would let you shave at least 30-50% of area mostly by shrinking resistors. TO-92 board footprint isn't much smaller than SMD transistors and board width will be determined by heatsinked output transistors. I dunno, maybe some layouting wizard could make it flat mountable...

Pretty sure a balanced tube input was published. Together with the GRHV100.

If you don't require balanced, then there's this - Don't think anyone has built them. And I'm not too crazy about the PSU requirements. Two GRLV's and the +100V. At that point might as well go full monty with 4xCFA2 and two tube frontends.

Nice to see that the seed has flourished into something that you enjoy! I'm still super happy with mine. Recently finished a Susy Dynalo MK2 for a member here and while that amp is terrific, the CFA3 has an effortless sound I haven't heard with other solid state stuff. The biggest difference I...

There better be a good reason for that 3U case! Good job!

Ah, got it!

16W in 50 Ohms is 28.28V. Where do the extra volts come if the supply is +/-24VDC?

Ha, the CFA3 walks over the Pass amp in portability.