Used and special one-off amplifiers

Time to split up the special’s page into two so one for headphones and another one for electronics.  Here I’ll list what my more unusual amplifier projects, used amplifiers that I’ve refurbished/rebuilt plus any other piece I’m selling.  Feel free to contact me at spritzer@mjolnir-audio.com if you are interested in any item here.  I will reply to every mail so if you haven’t received a reply within 24 hours then feel free to send me another email.  Email gets lost all the time or is flagged as spam.  All prices in US dollars (USD).

 

Here is my take on the BHSE, single chassis amp measuring just about 33cm deep with the volume knob. There were two of these amps under construction for a while of which this is the latter unit. This a full blown BHSE running at 20mA per tube and with the +/-400V power supply built into the chassis. It’s a tight fit but it all works nicely though the transformer can hum a tiny bit as it is suspended from the top panel. There is no hum present in the headphone output though.

The amp will shipped with a matched quad of JJ EL34’s and all the adjustment for the tubes is made through the top panel of the amp. I don’t endorse tube rolling at all but it’s a good idea with any BHSE amp to monitor how the tubes are doing from time to time. The amp can be set to either 117V or 230V via an internal switch. There is just one of these amps and I won’t build any more for a while at least.

Price: 5300$ plus shipping

Ahhh the Stax SRM-T8000. I bought this one as the first used unit to hit the market anywhere as I just had to try the new flagship amp. I got it from Japan but we quickly figured out how change to any voltage so it is now set to 240V. This is serial number 26 so early first batch for people who care about that. It is mint in every way and while Kevin Gilmore and I have both opened it up to see what the circuit contains, it is still perfect. The screws were not in the top as Stax screws always get scratched with use so they were kept secure until the amp ships out.  It comes with everything a new amp would come with except the wait time…  😉

Price: 4300$ plus shipping

I was asked to a fully encased version of the KGSSHV as I did a few of these a couple of years ago.  The heatsinks can be a bit sharp so with children around, it can be an issue.  I said why not and made a small batch of these, same power supply as the regular KGSSHV but a new amplifier board with on board heatsinks.  Same specs as the regular KGSSHV too and these amps are the first to sport the new custom made Stax sockets I had made.  As with most of my other amps they have an internal switch to select between 117V and 230V but as always. will be configured correctly before shipping it out.

The KGSSHV is my take on the maximum performance for a price.  When the Stax T8000 is just a badly done tube input version of the 727 (with some real degrade in terms of tech) the KGSSHV has more voltage swing, more current, fully regulated power supply and better performance for half the price.

Price: 2200$ plus shipping

While working on the latest batch of SRD-7 units I made this one special unit with transformers pulled from SRD-7 Mk2 transformer boxes, a teflon output socket and improved internal wiring.  I also wanted to try to change out the appearance a bit  to make this unit different to all the others I’ve built.

Price: 760$ plus shipping

Here is a modified and refurbished SRM-Xh I’ve had for a while.  I fixed the bias supply, replaced all the capacitors and replaced the volume control with the excellent TKD 2CP-601.  It’s a lovely amp but I don’t need anything like this now.  It will come with one of my power supplies for these amps with either a Euro or US power plug.

Price:  270$ plus shipping

Audio-GD R2R15.  100% stock and I just bought one to look at the circuitry inside.  It’s impressive that they can build this for 400$ or so, discrete R2R dac and a pretty good amp for dynamics.   It can even be used as a single source preamp.  I just have way, way too many dacs at this point and I need to thin the heard.  It looks like new and I even replaced the stupid screws they used on the top panel with much nicer counter sunk ones.

Price: 270$ plus shipping

Last updated 03.10.18

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