Too many headphone amplifiers, so parting with this one.
This is a downscaled version of the legendary F5 power amplifier by Nelson Pass, the amplifier circuitry is the brainchild of EUVL.
I do my entire listening with two other amps (DAO and UTHAIM) that are wired for a Lemo connector, so the F5HA gets too little
use and is too precious to just sit on the shelf.
This is an all FET amplifier schematic based on the Toshiba 2SK170BL and 2SJ74BL complementary pair as front end, output devices
are either the popular IRF9610/610 or Fairchild. Those really interested please read up on my little webpage (www.original-ton.net)
or on the thread here on Diyaudio. Semiconductors are matched to better than 1%, the power supplies are so called Nazar regs
delivering +/-15V.
The amplifier also sports an active crossfeed circuit (4 more 2SK170BL) powered by a pair of super regs that are absolute overkill here
but were at hand at the time. Custom made and double shielded toroid wired for 230V mains voltage, but with two primaries so could
be rewired for 115V mains.
All cased up in a totally custom and massive case weighing quite a bit..please consider heavier shipping costs (probably 8kg...16lbs).
Of course working flawlessly with the signature sound of a minimal parts count schematic using genuine Toshiba semiconductors, drives
almost all headphones (mine are Focal Clear, Senn HD800 and AKG K550) with no noise.
No need to say that this one is absolutely unique and 'one of a kind', so coming up with a price it not easy.
600$ OBO plus shipping from Germany
This is a downscaled version of the legendary F5 power amplifier by Nelson Pass, the amplifier circuitry is the brainchild of EUVL.
I do my entire listening with two other amps (DAO and UTHAIM) that are wired for a Lemo connector, so the F5HA gets too little
use and is too precious to just sit on the shelf.
This is an all FET amplifier schematic based on the Toshiba 2SK170BL and 2SJ74BL complementary pair as front end, output devices
are either the popular IRF9610/610 or Fairchild. Those really interested please read up on my little webpage (www.original-ton.net)
or on the thread here on Diyaudio. Semiconductors are matched to better than 1%, the power supplies are so called Nazar regs
delivering +/-15V.
The amplifier also sports an active crossfeed circuit (4 more 2SK170BL) powered by a pair of super regs that are absolute overkill here
but were at hand at the time. Custom made and double shielded toroid wired for 230V mains voltage, but with two primaries so could
be rewired for 115V mains.
All cased up in a totally custom and massive case weighing quite a bit..please consider heavier shipping costs (probably 8kg...16lbs).
Of course working flawlessly with the signature sound of a minimal parts count schematic using genuine Toshiba semiconductors, drives
almost all headphones (mine are Focal Clear, Senn HD800 and AKG K550) with no noise.
No need to say that this one is absolutely unique and 'one of a kind', so coming up with a price it not easy.
600$ OBO plus shipping from Germany
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