This Quicksilver headphone amp was modded by an experienced community member for his personal use before he upgraded to a considerably more expensive amp. I owned the stock QS HPA originally, and let me tell you, the mods make a huge difference and smooth out a lot of the rough points of the stock amp. I would not have lived with the stock amp long-term, but was perfectly happy with this as a "downgrade" from owning the DNA Starlett/ZDS/3F/etc recently. Someone could ride off into the sunset with this and be perfectly happy assuming they have the right DAC/headphone synergy.






Here is a list of the mods:

• Coupling caps changed to Dueluend CAST 630v Cu-Sn
• Replaced main power capacitor to slightly larger value cap
• Replaced all power caps to high ripple current Nichicon
• Cathode bias caps changed to bi-polar
• Preamp plate resistor changed to carbon comp
• LED cathode bias on first pre-amp stage
• Added Copper shielding to output transformers
• Power LED changed to green with proper diode to run off heater taps (protects power transformer)
• Chrome transformer cover added

Have lots of tubes for you to play with. 3 sets of EL 84 tubes (JJ stock tubes, Tungsram, and Ei). One pair of NOS Glotron RFT 12AT7, a pair of NOS Toshiba 12AT7, and a set of 6N23P with the proper adapters (pictured in the amp). Note the Ei are not shown in this photo as they were on loan to a buddy for an audition when I took the photo.

Also including an iFi Grd Defender with this bundle. It seems whatever type of grounding scheme Quicksilver uses on this amp makes it very susceptible to ground loops (pretty much every owner I have talked to has dealt with it). Thank you iFi, because this product sorts it out. A must-own with this amp it seems.

Aesthetics wise in great shape. Only one scratch on the inside of black cover plate (see picture). The chrome transformer cover really elevates the look of the amp. Please note that one of the mods has changed the power LED to a green rather than blue LED.

Asking $1200, free shipping CONUS, buyer covers Paypal fees. The asking price is less than the cost of the mod and what I have paid for the bundled extras, I just want to find this wonderful amp a good home. If you are interested in the amp but not some parts of the bundled stuff let me know and we can chat price. Does not include original box but will pack well.