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Image Credit: Starsky on eBay

McIntosh C-20 Stereo Compensator / Preamplifier (1959-1963)

Retail price $269.00 in 1959.

"Simplicity, flexibility, and beauty have been integrated by careful engineering and design in the McIntosh C-20 Stereo Compensator. The greatest listening pleasure in stereo or monophonic reproduction is assured as a result of over a year of careful and diligent research in hte requirements of a new preamplifier designed for stereo. Full stereo flexibility has been provided plus built in protection for your investment in monophonic records. McIntosh has designed in the C-20 Stereo Compensator the necessary features required to give the finest monophonic reproduction the keenest listener may require. Complete satisfaction is yours in monophonic and stereophonic with the McIntosh C-20 Stereo Compensator."

For Sale:   This Mcintosh C-20 is currently for sale on eBay via seller Starsky. Get your bids in now, auction ends April 23, 2014.

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[Image Credit:  eBay Seller 'Starsky'. Visit Starsky's eBay Store to see his current vintage audio auctions]

Fisher 400 Tube Receiver (1964, $370 USD MSRP)

The 400 closely resembles the Fisher 500 and 800 series receivers, with a brushed metal faceplate and brass-faced knobs. Left of the dial is the famous Fisher bird logo, with a musical note in its beak.

Music Power	 65 watts total (IHFM, at 1kc and 0.5% THD)
RMS Power	 (at 1 kc and 0.8% THD)One channel driven: 30 watts
Both channels driven: 50 watts

Click past the break for more pictures of the Fisher 400 Tube Receiver.

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Harman Kardon Citation I Preamplifier

The Harman Kardon Citation 1 preamplifier does not adhere to conventional circuitry and incorporate many advanced engineering innovations normally available only in the highest quality studio equipment. The unit consists of a group of circuit blocks called active and passive networks. Active network are those which incorporate vacuum tubes and furnish amplification. Passive networks consist of resistors and condensers exclusively and do not amplify. An effort was made to carefully seperate thes circuit blocks in this preamplifier

Specifications :
Frequency Response at 1W...............(+0dB, –3dB) : 5Hz - 80kHz
Distortion (Stereo).............................<.05% at 2 volts
Hum and Noise.................................High Level Input: 85dB below rated output /
..................................Low Level Input: less than 1.5 microvolts referred to input terminals
Output Level.....................................Main Outputs: 2 volts / Tape Outputs: 0.3 volts
Input Sensitivity Line (high)................0.2 volts
Input Sensitivity Line (low)..................Phono RIAA: 2.5mV / Tape: 2mV / Ceramic Phono: 0.1 volts
Filter................................................Low Frequency: FLAT; 15Hz subsonic filter; 75Hz rumble filter
Finish..............................................Charcoal Brown and Gold
Cabinet Finish..................................Hansome Walnut Enclosure
Dimensions(w x d x h)......................41.5 x 32.5 x 20 cm
Weight............................................15 kg

Download the original owners manual here:

Harman Kardon Citation I Owner's Manual.

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Marantz Model 9 Amplifier  (1960 - 1968)

Tube Complement: 2 x 6DJ8/ECC88; 1 x 6CG8; 4 x 6CA7/EL34; 1 Zener Diode; 5 Silicon rectifiers.
Overall Dimensions: 15⅜" x 8¼" x 10½" (W x H x D); Panel 15⅜" x 7¾" (W x H)
Shipping Weight: 60 lbs

Power: 70 watts continuous - 140 watts peak. Switch for 40 watt triode operation.
Response: At full rated power; within 0,1 dB - 20 cps to 20 kc; within 1 dB - 12 cps to 40 kc. At 0,5 watt, within 1 dB - 3 cps to 40 kc
Harmonic Distortion: At full rated power; less than 0,1% at mid-frequencies, less than 0,33% - 20 cps and 20 kc.
I.M. Distortion: less than 0,5% at full rated power.
Hum & Noise: better than 100 dB below 70 watts.
Damping Factor: 17. Damping factor may be changed internally by adding current feedback.
Output Impedances: 4, 8 and 16 ohms, plus 1 ohm tap for center-speaker conection.

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New gold plated RCA input jacks and green power light.

While I'm waiting for the capacitors and resistors to come in, I decided to scrounge up some parts I had lying around.  Here's what I found:

1 - Green power light
2 - Gold plated RCA jacks (2)
3 - Fuse holder
4 - Power toggle switch
5 - Speaker binding posts (2 red, 2 black)

Adding these parts wasn't very hard - especially since they're not even wired in yet!  It was fun to spend some time visualizing where I wanted various components to go.  With the exeception of the binding posts, existing holes in the chassis were repurposed to hold the new components.

Skip past the break to see how and where everything was installed.

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Marantz Model 8 Amplifier (1959-1962 - $250 USD MSRP)

Matching Preamplifiers :  7

Matching Tuners : 10B

Tubes : (2) 6BH6 – (2) 6CG7 – (4) EL34

Read past the break for more pictures and specs.

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[Image Credit:  eBay Seller 'Starsky'. Visit Starsky's eBay Store to see his current vintage audio auctions]

Mcintosh MC240 Tube Amplifier (Orig. MSRP: $288, 1960-1969)

Technical specifications

• Stereophonic power amplifier
• Power output: 40w/channel in stereo modo. 80 watts in mono.
• Class: AB
• Power tubes: Philips ECG 7581A (x4)
• Preamp tubes: Sovtek 12AX7LPS (x3), National 12AU7 (x2) , 12BH7 (x2). Diode rectification.

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Dynaco PAS Series Tube Preamplifier (PAS / PAS2 / PAS3 / PAS3x

The Dyanco PAS-3X stereo preamplifier is a two channel control center which permits either monophonic or stereophonic reproduction from any program source, with any modern amplifier.

This preamplifier design is most renowned for it's low noise and distortion, and it provides striking simplicity of operation while retaining full flexibility for the enthusiasts subtle adjustments.

Specifications

Inputs: 3 stereo low level, RIAA phono, NAB tape head, special, 4 stereo high level

Distortion: less than 0.05%

Frequency response: 10Hz to 40kHz

Gain: 60dB (phono, tape), 20dB (line)

Tubes: 12AX7 (ECC-83), 12X4

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[Image Credit:  eBay Seller 'Starsky'. Visit Starsky's eBay Store to see his current vintage audio auctions]

H.H. Scott Stereomaster Type 399

Marantz 10B Stereo FM Tuner

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