For your consideration a terrific custom built 6SN7 Aikido Tube preamplifier.
This is a very solid build: exceptional parts quality throughout, large and heavy par metal case, elna stepped attenuator, etc.
This unit absolutely demolished the Promitheus Apollo pre I used to own. Selling only because I need to clear some space and my Wavac 300B works directly from my source.
Please see the pictures - truly a great unit. 3 inputs and 2 outputs.
Includes a closely matches quad of lightly used GE 6SN7GTB.
Cosmetically, the case is very nice and the hammertone grey is a quality finish. small mperfections exist due to the custom nature of the build, but overall looks very clean and extremely professional. The volume knobs are pretty awesome. Balance control is quite useful if, like me, you suffer from imbalanced hearing. Sucks to have everything shifted to the left.
Really a neat unit to see/feel in person. Weighs ~20 lbs.
Separate power to filaments and heaters (hence two on/off switches). Must turn filaments on first, wait 30 seconds, then flip second switch - preserves tube life.
Here is what the builder had to say:
"For sale is an Octal Aikido tube preamp using the circuit boards from Glassware TCJ (Tube CAD Journal) for both the signal circuit and also for regulated B+ and filament supplies. This unit also has the upgraded Elma switched stepped attenuator (attenuator kit alone lists for $170)
The preamp is housed in a 16 by 16 inch Par-Metal aluminum chassis that has been painted black Hammertone.
3 input and 2 outputs via gold plated RCA's. IEC socket for your favorite power cord (no power cord supplied).
Front has a 3-position input switch, the 3 knobs for the stepped attenuator, toggles for both the filament and separate B+ transformers, and a B+ power status light.
The unit stands on four large rubber footers.
Inside is the over spec'd power transformer, separate Hammond filament transformer, power supply board, signal chassis board, attenuator board and selector switch and wiring.
The Octal Aikido is set up for 6SN7 tubes. Four closely matching GE side getter 6SN7GTB tubes that test as new on my Amplitrex tester are supplied.
This preamp is great sounding. Nice extension but smooth, as one would expect from an octal tube circuit."
Please do not hesitate to ask any questions or to make an offer. I ship worldwide at cost. Paypal users please add 3%.