OK, here are the deet's.
It is a prototype and many things are still in flux. The following will be issued in a press release.
Tube Headphone Amp prototype (yet to be named) - Target price range = $2995
Tube complement: (2) NOS 6922 or 6DJ8 dual triodes, (4) NOS 12B4 single triodes.
BW: 20Hz-30Khz or better.
Dimensions: TBD (Still early prototype)
Power: Final is TBD, but capable of driving high efficiency speakers. 2-3 Watts or more.
Circuit design by Damon Coffman of Coffman Labs design.
Shortest possible, all tube signal path design.
Vintage NOS OIP (Oil-In-Paper) coupling and bypass capacitors.
Single stage NOS 6DJ8 -based voltage amplifier into NOS 12B4 based P-P output stage, transformer coupled with custom Electraprint Phase Splitting Reactors (PSRs) and P-P output transformers.
SS voltage rectification for best overall sound and lowest noise (determined after extensive listening and measurement).
Choke current and voltage regulation.
(1) Mini jack output, (1) XLR balanced output, (1) 1/4” output.
One pair RCA inputs. (Possibly toggle for two inputs or selector for more - still TBD).
Volume control goes to ’11’.
Speaker Output jacks? TBD. At 2-3W, it could still drive high-efficiency speakers or desk speakers. (Input here welcome!)
Finish and Aesthetics:
Still TBD, but expectation is for well isolated, single enclosure design with small desk-friendly footprint.
A lot of details to be finalized. Target price is to be $3K. It will be a NICE looking piece of gear! Options will be determined by feedback from customers.
We may offer add cost options, depending on what options are desired, but we can cross that bridge.
I am thinking of a one-box design, dead quiet, with exposed tubes (removable tube cage) and retro/modern aesthetics with exposed tubes and modern finish. Still a ways to go in this department, but the CIRCUIT SPEAKS FOR ITSELF!
I will be offering after-hour demos in the Iris Room at RMAF with Audeze LED-X, HiFi Man HE1000's, lower price Hifi Man model and Ether 'can's. Wherever possible, Wywires custom headphone wire will be used for demos.
Anybody interested, PLEASE drop by at RMAF, or at least, please chime in with input here!
This is an exciting collaboration between Damon Coffman of Coffman Labs and ModWright Instruments (MWI).