Appears to be the same part for either AM10 or MX10. Three position switch with two sets of contacts.
SAE 1800 and other preamp parts, switches, faders, relay, RCA Connector - $8, Black buttons - $6. We can rebuild faders. Call for specifics.
(1) MC Board (MC PreAmp), allows moving coil cartridge to be used in Apt Holman Pre-Amp. MUST BE INSTALLED. 100 ohm impedance, used - very good #9 condition
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Control,non detente (click) , Version with slightly longer shaft 1/8" inch higher but easily can wire jumped into board($6).
Nonfunctional machine good for parts. Face plate in excellent condition (one very tiny edge nick), internal ladder ribbon cables for function switches, volume control, etc. Many specialized parts available.
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Please be aware there is a minimum $4-$6 to ship any part. International orders will be $14-$16 to ship for anything larger than an envelope. Shipping costs are non negotiable, so please, PLEASE do not ask for a part, or for us to search for, or quantify a part if you cannot pay for the shipping.
Gray, All lettering intact, this face can use previous screws standard to regular face, very slight bend upper left hand corner, used, Condition #8+
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120vAC transformer for ADA MB-1. Excellent condition.
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Knob kit. 2 large, 4 small. Matte black quasi anodized paint. Nice #9+ condition.
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#A02393, Removed back panel and power switch, no faceplate, missing some controls and components, for in-house use, for salvaging parts, not functional, #7
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Pebble Black Finish, various available. One (1) in #9 Condition- $68. Six (6) more available in various conditions, all good with no major damage, approximate #8+ condition -$46.
power switch, complete with mounting harness, button, leads, used, salvaged from unit, fully in tact, great condition, works well, condition # 9
We offer expert time-saving advice on repairing many types of home and studio equipment, as well as consulting for product and recording issues, at a fair and reasonable cost. For complex matters, we sometimes must charge a small technical fee. If we can help solve your repair problem or technical conundrum, give us a call. (617)926-8020.
Brown stain on cover, could be painted. Condition 8
Power transformers. Creates +/-15 volts. salvaged.
Substitute balance control for #1347005, 220K. Alps control is far better part. Click stop, high accuracy, low noise. Shaft must be cut down a little.
worn off lettering at volume & input label, very minor scuffs at edges, usable but obvious finger wear. Condition: 7
Single Piece, Good condition, lightly worn, lightly scratched but no broken. #7 Condition
Single Piece. In good condition with minor scuffs and wear. Corners lightly bent and scratched. #7+ Condition
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Please be aware that there is a minimum $4-$6 to ship any part.
Special, high voltage regulator transistor. New old stock.
Rackmount faceplate, lettering good but faceplate has lost black anodization and turned purple, no scratches, #7
with black button cap. 2 sets of contacts, which can be doubled up and perform as new. salvaged, #9 condition.
precision pots, #279Y10Kx2 8323, 10k ohms X 2, 8 legs, 5/16" shaft length, 6 available, new, condition #9
(2) Handle available, Matte nickle finish on Aluminum handle, Screws included (need to be cut to proper length for face panel with bolt cutters) 3" center-center, used, good condition Condition #9 Price is for the pair
Please be aware there is a minimum $4-$6 to ship any part. International orders will be $14-$16 to ship for anything larger than an envelope. Shipping costs are non negotiable, so please, PLEASE do not ask for a part, or for us to search for, or quantify a part if you cannot pay for the shipping.
10K ohm x 2; 6 pin; audiophile grade, with washer and nut. New old stock.
10k ohms X 2, detented control, #279Y10Kx2, 6 legs, 5/16" shaft length, 10 available, new, condition #9 (the listed price is for 2 controls)
FYI:
These are fine detent (click) controls. They may be more accurate than the program channel balance you are sending through them, actually. To improve "scaling" of the control, a 2.2k to 4.7k resistor could be put in front (series) with the control. This would probably allow that at the average listening level, the position of the control would be about halfway up.
But this level of audio really also depends on what signal preamp levels come before, and what amplifier gain or input impedance you have after the control. Such matters of level are usually more inaccurate here than with the control itself. In a Japanese preamp like a Nikko Beta 1 (uses same part), control tracking accuracy is within .5 db channel to channel balance. But passive control designs often are inaccurate, subject to matters as mentioned above.
It seems ironic, but passive circuit audiophile designs actually are not as accurate or as quiet as the op amp buffer IC pre and post the control. These controls can be wired in as a true gain control also (not a simple level control) and now frequency bandwidth, impedance matching problems, etc are all solved. But a passive control is OK as long as you are not trying to output a tube preamp to a tube in amp whereby the impedance and signal load matching is now usually a mismatch. It can be a problem to get everything right. Here is a case where probably you must "pre load" the control with a 50k series resistor! Tube preamps by design need to see this minimum requirement "load," FYI.
