Ismael was great to work with, very kind and patient and reasonable, great HeadFi'er, highly recommended!

5ft. Dual 3.5 connectors for use with Focal, hifiman, ETA. In excellent condition, works and sounds great, no longer have a balanced amp to use it with

This is an ireland model, older silver screen, in great condition. This is a great sounding silver screen pair, the best SS pair I've heard. Only selling because of my preference for hd800. Pads and headband are in excellent condition. Comes with 1/4inch stock hd650 cable.

Moriez was awesome, very patient, kind, and reasonable. Would happily deal again, highly recommended!

Nice guy, fast shipping, came as described, highly recommended seller!

Let me know what you have, thanks

Joe was excellent, helpful and friendly, item came packaged nicely and as described, highly recommended seller!

Great communication, shipped quickly, great seller!

Schiit Loki. Works great and is in great cosmetic condition.

Penguin had great communication, was nice to talk to, paid promptly, and had good info to share. Highly recommended!

Hewlett shipped very quickly and accommodated overseas shipping, had great communication, and was great to work with. Highly recommended seller!

Cardas Grey SE cable in good condition for Sennheiser HD6X0 models, 10ft length with 1/4 termination. Cardas emblem on rubber connector has worn off slightly with age as pictured, still works great.

This is an early silver screen HD650 in excellent cosmetic condition. S/N is 121XXX. Headband foam is original and worn in from typical use, newer pads are moderately worn in but still in good condition. Early Ireland model estimated from somewhere between 2008-2010. Comes with a KK 5 foot...

Denver was a pleasure to deal with, great communication, fast payment, friendly and knowledgeable, highly recommended!

Pandemonium was a great buyer, paid promptly, great communication, highly recommended!

Elquixote had great communication, kind and quick, very happy with the purchase, highly recommended

Ifi iDSD Black Label in excellent condition. Ships to CONUS.

My god, sounds great. If you find some extra special tube synergy with the QS in the future, would love to hear about it!

No problem - it's a very versatile amp, and I think the OI at 2 ohm is right in the sweet spot for a ton of headphones. Low enough for efficient dynamics, high enough for high impedance Senns to sound good. I do wonder what the design goal was with the amount of gain that it has.. high impedance...

Selling for half of the going used market rate is a bit odd though.. no box and scuffed regardless I've never seen one go for less than 600 in virtually any condition. It's a great act of kindness though! GLWS

I've spent a few months with the QS HPA now and would like to leave a review. Test chain and favorite current configuration: Pi2AES via bnc> Bifrost 2 > QS HPA (baldwin/matsushita 12au7, 60's hammond amperex el84) > HD6XX / HD800SDR In short, the QS HPA is an very well made, point-to-point...

Price dropped to $350

SoundApprentice shipped very quickly, had great communication, and provided excellent packaging, what a great way to ship tubes! Thanks for the good experience

Sorrodje still sells them, there is a thread on the "other" forum with the email he currently uses for contact, if you need more details let me know in a PM. He does a bundle deal if you buy 3 sets at a time. Edit: He also has an account here on HF with the same name Sorrodje, you may be able...

Still looking.