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Purveyors of Electronic, Musical
and Vintage goods
from then, now and in between.
TUBE AUDIO AMPLIFIER / VINTAGE AMP CHASSIS & TUBE TUNERS
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MORE AMPS AND CHASSIS LIKELY COMING!
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MORE AMPS AND CHASSIS LIKELY COMING!
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*Price on any of the above units may increase upon any further bench testing / research without prior notice. |
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WARNING: Older designed tube audio equipment can be VERY dangerous. Typically the undersides are completely exposed. Operating voltages are commonly 300 to 900 volts! (most modern, solid state audio gear operates on internal voltages of 9-50 volts, and commonly 12v) Internal capacitors can carry lethal charges for years after they have been disconnected from their AC power source. Even carrying a tube unit can be deadly if your fingers curl around the bottom and touch the wrong area. At the least you can get a shock that would likely cause you to drop the unit immediately. Believe me, I've done it. In addition, the tubes are often exposed, and get very hot when operating. Commonly hot enough to melt rubber / plastic wire insulation and certainly hot enough to burn skin. These units generally have no safety / protection circuits built in, with the exception of maybe a simple line fuse. If anything "goes south" on them or in the system they are being used in, they will likely continue to run. This can cause further damage to the unit itself, other components or fire. Much of this equipment has been tested only to a limited degree. The test results posted or listing text should in no way be construed as an indicator of the performance you will experience or as evidence that the unit is ready to use or that it should even be operated under any conditions. Thus they are being offered for sale as collectors items, and as curiosities only for display. The AC cords will commonly be severed prior to posting (except on highly collectible units where greater degrees of originality are valued). They don't make 'em like this anymore for a reason. Anyone who plans on actually trying to use one of these or any "vintage" tube unit should have it first checked / modified to a level of safety they are comfortable with by a qualified technician. WARNING: PLEASE USE CAUTION WITH ANY ELECTRICAL ANTIQUE. MOST OF THESE THINGS WERE DESIGNED AND MANUFACTURED WITH MUCH LESS CONSUMER PROTECTION BUILT- IN. THEY MAY ALSO HAVE BECOME MORE DANGEROUS WITH TIME. ANY REPAIR OR RESTORATION SHOULD BE UNDERTAKEN ONLY BY A QUALIFIED TECHNICIAN.
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Single Parts / Assemblies: |
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It's all a matter of taste: Some old 'tube audio chassis' can be repurposed / re-designed as 'Steampunk' projects.
Many of their
parts such as tubes, knobs, dials, chassis, transformers etc are from
the "Machine Age" with a very 'Industrial' look to them. We may even use
a few for some 'Steam Punk' projects around here.
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Tubes-Electronic_For_Sale.htm |
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Jerry Gahagan of
OakTreeVintage |
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SOLD ITEMS BELOW |
SOLD ITEMS BELOW |
SOLD ITEMS BELOW |
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TO SEE OUR ARCHIVE OF SOLD AMPS & PREAMPS CLICK HERE |
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  NEW LISTING (click on above thumbnails to enlarge photos) VINTAGE HAMMOND MODEL M-3 M3 Chassis #AO-29-1F MONO-BLOCK TUBE AMP / AMPLIFIER / CHASSIS SOLD 7/23/07 Circa likely 1950's for sale Hammond, Model M-3 / AO-29-1F, Mono-Block tube amplifier. We have only connected it to AC with known good tubes installed. It drew .4 amps. At this point the amp is untested further than that, simply due to lack of exact connection knowledge. If anyone wants to offer assistance on correct connection to test further, it would be welcome. Primary Transformer part number is H-AO-22111-1. Other chokes / transformers marked AO-20936-3. The 11 tube sockets are as follows; 1x 5U4, 1x 6BA6, 2x 6V6, 1x 12AX7, 2x 12AU7, 2x 6AU6 and 2x 6C4. No tubes are included. We have tested the 3 filter caps with our EDS 88A cap analyzer. Cap values are as follows: #1 - 50mfd / 450 VDC #2 - 40mfd / 400 VDC, 20mfd / 400 VDC, 20mfd / 300 VDC, 30mfd / 25 VDC. All caps tested fine. No further testing has been done at this point. Amp is in good cosmetic shape as well. The tubes shown in the photos are not included. Chassis measures 22" x 6" x 6". $125.* SOLD 7/23/07
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  (click on above thumbnails to enlarge photos) VINTAGE UNKNOWN DUAL 6L6? MONO-BLOCK TUBE AMP / AMPLIFIER / CHASSIS Circa likely 1950's SOLD 2/21/13 SHIPPING TO CALIFORNIA Unknown Mono-Block tube amplifier. It came to us without any tubes installed or tube indications marked on the chassis. After a bit of research and info from a customer, we installed 1x 5U4GB, 2x 12AX7 and 2x 6L6GC's. No tubes are included. The amp worked great! Current draw with tubes was .85A at idle. Transformer part numbers are; Primary - TR-126-A & Output - TR-125. No tubes are included. We have tested the 4 element filter cap with our EDS 88A cap analyzer. Cap values are as follows: #1 - 40mfd / 450 VDC, 20mfd / 450 VDC, 20mfd / 450 VDC, 20mfd / 450 VDC, (All lugs in use.) On our test bench: The amp produced 10.6 volts just prior to clip at 8 ohms for 14 watts. We did not test it at 4 or 16 ohms. It draws .85A at idle. Produced perfectly clean sine waves to clip. Amp is in good cosmetic shape as well. Any tubes shown in the photos are not included. Chassis measures 10" x 9.5" x 5.25". $150.* SOLD 2/21/13 SHIPPING TO CALIFORNIA |
  (click on above thumbnails to enlarge photos) VINTAGE DYNAKIT MK IV TUBE AMP CAGE / COVER Circa 1961 for sale Great condition Dynakit / Dynaco Mark IV tube amplifier cage / cover. Original finish in great condition. No dents, bends or broken welds. Logo intact and excellent. No screws included. $45. SOLD 9/7/07 |
 
 (click on above thumbnails to enlarge photos) VINTAGE DYNAKIT MK IV MONO-BLOCK TUBE AMP / AMPLIFIER Circa 1961 for sale Great condition Dynakit / Dynaco Mark IV tube amplifier. Original brown / bronze finish on cage in great condition. Some typical light surface corrosion to the nickel plating on the chassis. With the exception of the original Dynaco 7199 tube (needs to be replaced as it's weak) no tubes are included. We have tested the filter caps with our EDS 88A cap analyzer. All test fine. We installed our tested "shop tubes" along with the existing 7199 for the bench test. The transformer pretests with 7.4v, 410-0-410v, & 59 VAC (all voltages ground referenced to chassis). The tube sockets are for 1x 7199, 1x 5AR4 and 2x EL34/ 6CA7. On our test bench: The amp produced 19.93 volts just prior to clip at 8 ohms for 49.65 watts (originally rated at 40 watts). It draws .9A at idle. Produced perfectly clean sine waves to clip. Original Specs: Freq Response: +-5db / 10-40,000Hz IM Distortion: <1% at full rated power / 40 watts S/N ratio: 90db below 40 watts Outputs rated @ 4, 8 or 16 ohms Amp is in great cosmetic shape as well. Sounds great! Comes with original bottom plate and cage with logo. SOLD 9/23/06
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 (click on above thumbnails to enlarge photos) VINTAGE FISHER 30-A 30A MONO-BLOCK TUBE AMP / AMPLIFIER Circa 1959 for sale Great condition Fisher 30-A, Mono-Block tube amplifier. Original finish in great condition. We have tested the filter caps with our EDS 88A cap analyzer. All test fine. We installed tested tubes from our stock for the bench test and they are included (no Chinese tubes). Will be old Russian and USA tubes. The tubes are 1x 6CA4 / EZ81, 1x 12AX7 / 7025 / ECC83 and 2x EL84/ 6BQ5 / 7189. On our test bench: The amp produced 10.75 volts just prior to clip at 8 ohms for 14.5 watts. At 4 ohms 8v / 16 watts & @ 16 ohms it produced 15.5 v / 15 watts. It draws .85A at idle. Produced perfectly clean sine waves to clip. We did not test above clip. Original specs: Freq Response: 20-20kHz THD <1% @ 20 Watts Hum & Noise Completely Inaudible Peak Power 38 watts Output 4, 8 & 16 ohms Transformers are originals. Amp is in great cosmetic shape as well. Quiet and sounds great! The tubes shown in the photos are included. SOLD |
 (click on above thumbnails to enlarge photos) VINTAGE RCA / CUSTOM MODIFIED CLASS-A, STEREO Quad EL84 / 6BQ5 TUBE AMP / AMPLIFIER / CHASSIS Serial #63186 SOLD 12/6/07 Circa likely 1960's for sale RCA / custom modified Stereo tube amplifier chassis. It came to us without any tubes installed or tube indications marked on the chassis. We deduced the likely suspects and installed 1x 5U4GB, 3x 12AX7 and 4x EL84 / 6BQ5's. No tubes are included. The amp worked great! Current draw without tubes was .2A and with tubes, 1.3A at idle. The current draw remained the same all the way through to clip (stands to reason since it's a Class-A amp) Transformer voltages are as follows: 390v-0-390v, 6v, 3.7v-0-3.7v, 1.5v, .5v & 12.6 VAC (all voltages ground referenced to chassis). Transformer part numbers are; Primary - 972114-14 / 1386315 & Outputs - RCA 971165-14 / 1386248 & RCA 971165-15 / 1386308. We have tested both filter cap with our EDS 88A cap analyzer. Cap values are as follows: #1 - 80mfd / 400 VDC, 80mfd / 400 VDC #2 - 35mfd / 400 VDC, 35mfd / 400 VDC, 20mfd / 25 VDC, 20mfd / 25 VDC On our test bench: The amp produced 9.5 volts just prior to clip at 8 ohms for 11.28 watts. We did not test it at 4 or 16 ohms. It draws 1.3A at idle and all the way through to clip. Produced perfectly clean sine waves to clip. RCA inputs. Amp is in good cosmetic shape as well. Only issue is that one of the filter caps has a broken mounting flange, so it "lists" to one side a bit. Should be replaced. Any tubes shown in the photos are not included. Chassis measures 14.5" x 8" x 6.25". $225.* SOLD 12/6/07 PS. We had a visitor tell us that he has the same amp and that his sounds great! Thanks for the info Keith. |
 MCINTOSH MC-40 COND. 9.0 SOLD |
VINTAGE RAULAND TUBE AMPLIFIER
Cardboard surrounds on transformers.
Was vari-AC'd over 30
minutes, in 10 Volt increments, and
finally left to run for a half hour into an 8 Ohm
load. Rated at 20 Wats, from 2 metal
6L6 output tubes. Had small amount of audible
60 cycle hum when turned up past half way. Faithfully reproduced a
number of different test tones both audibly and on a scope. Has control
pods mounted on the ends of fixed cables. No scratches, dents, rust,
corrosion, finish chips, etc. This thing
shines. |
 EICO
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 LEAK TL / 12 PLUS AMP & "POINT-ONE PLUS" PRE-AMP CIRCA '58 SOLD |
  NEW ADDITION 4/19/06 (click on above thumbnails to enlarge photos) EICO HF-60 HF60 TUBE MONO POWER AMP AMPLIFIER SOLD 5/1/06 Excellent Shape Cosmetically, needs work?? I have had this for a few years and just got around to trying it out. It is beautiful cosmetically, but it had a past issue with the a filter cap blowing. Someone had put a cap underneath the amp, but I don't think it's wired right and I don't have a schematic or service manual, so am limited as to my repair abilities. I do not know the condition of the transformers. No rust or corrosion anywhere, except residue from the blown cap. The tubes are sockets are 2x 3L34, 1x 6SN7GTB, 1x EF86 and 1x 5AR4. No tubes are included with the amp. Selling As-Is for restoration. Cosmetic Cond. 8.5 $650. SOLD 5/1/06 |
 NEW ADDITION 4/19/06 (click on above thumbnails to enlarge photos) MCINTOSH MA230 MA-230 SOLD 4/20/06 TUBE INTEGRATED AMP AMPLIFIER Excellent Shape Cosmetically, needs something?? I have had this for a few years and just got around to trying it out. It is beautiful cosmetically, but I can only get very low output from it. I tried different tubes (tested), but I don't think the problem is in the output section. I'm not even sure it is in the solid state preamp section (this unit is a hybrid in that the preamp is Transistor and the power amp is tube, but I assume you already knew that). I can't seem to get a signal much past the input selector switch. Since it is happening to both channels there is likely a single ground somewhere that is not getting a good connection. The tubes are all getting plenty of power and are heating up. I don't have a schematic or service manual, and this seems to be a fairly sophisticated amp, so am limited as to my repair abilities. If anyone has any ideas different than what I have covered I would love to hear them. Might keep it if I could get it going. Again, cosmetically it's "LIKE NEW". No rust or corrosion anywhere and the chrome and glass are perfect. All original knobs intact. The tubes are 4x 7591, 2x 12AU7 and one 12AX7. They are a mix and all USA! If you get the amp going you should probably plan to put in a set of matched output tubes, but the preamp tubes would be fine. Selling As-Is Cosmetic Cond. 9+++ $750 SOLD 4/20/06 |
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Wondering where
the "tone" you remember went?....
.... Surround yourself with Silver and find it again!
POLICIES, SPECIFICATIONS, AVAILABILITY, INFORMATION
AND PRICING SUBJECT TO
CHANGE AT ANYTIME AND
WITHOUT PRIOR
NOTICE
and changes may not be posted to web immediately.
20-30% restock fee
/ service charge applies to all returns for refund
depending on item specifics & / or individual distributor / drop shipper policies.
See
our "Warranties / Returns" page via the link below for more details.
$20.
Minimum Orders
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