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Details about  Conrad Johnson MV75a-1 Classic Tube Amp 75W/channel Excellent Condition!

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Conrad Johnson MV75a-1 Classic Tube Amp 75W/channel Excellent Condition!
Conrad-Johnson-MV75a-1-Classic-Tube-Amp-75W-channel-Excellent-Condition
Item Sold
Item condition:
--not specified
Ended:
Feb 19, 2012 12:26:10 PST
Winning bid:
US $1,100.00
32 bids ]
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Item location:
Los Angeles, California, United States

Description

eBay item number:
230744254299
Seller assumes all responsibility for this listing.
Last updated on  Feb 11, 2012 10:36:54 PST  View all revisions

Item specifics

Brand:

Conrad Johnson

 
Up for auction is a classic MV75a-1 from Conrad Johnson in very good condition.  This is the 75W/ch amp with the great sounding 6550 output tubes.  The serial number of the amp is 5721210.  Be sure to zoom in on the pictures to see the great condition this amp is in.  I just took these pictures for this listing, so this is what the amp looks like right now.   I replaced all the tubes a few years ago and shortly after stopped using the amp.  The tubes have about 80 hours on them and all four of the output tubes are a matched set.  There are a couple of small scratches on the front handles, but that is about it for cosmetic flaws.  The amp sounds great - Please let me know if you have any questions.  Thanks for checking out the listing!

From the Conrad Johnson web site:

Introduced in 1979, the MV75 was conrad-johnson's second product, and first power amplifier. An immediate success, and widely acclaimed as a state-of-the-art contender, this power amplifier strongly signaled that conrad-johnson was indeed a serious company. Like the PV1, the MV75 employed metal film resistors and mylar capacitors throughout the circuitry.

The MV75 broke new ground in tube amplifier design by featuring a built in bias indicator circuit to simplify bias adjustment for the tube output stage-a task that must be performed whenever output tubes are changed, and periodically as they age. Earlier tube amplifiers required additional test equipment and technical expertise to set the bias for the output stage-a daunting task for many owners. The MV75 included a built in LED bias indicator for each output tube requiring only a screwdriver to accurately set the bias. This arrangement made it a simple matter for owners to keep their amplifiers operating at peak performance. All subsequent conrad-johnson tube amplifiers have included this built in bias indicator.

The MV75A upgrade added high-voltage fuses to protect the amplifier from shorted output tubes and upgraded the mylar capacitors to polypropylene. The MV75A-1 upgrade included circuit revisions to reduce the impedance of the regulated power supplies for the voltage amplifier and inverter stages.

Features: 4, 8, 16 ohm speaker taps (screw type), one pair of inputs, two plate fuses (MV75A, and MV75A-1), mono switch, power switch. 

Specifications:

Stereo 75 watts per channel, RMS, at 4, 8, or16 ohms with both channels driven from 30Hz to 15kHz with no more than 1% THD or IMD. Monaural 150 watts, RMS, at 4, 8, or 16 ohms from 30 Hz to 15 kHz, with no more than 1% THD or IMD. 
Input Sensitivity: 2.35 Volts RMS to rated power 
Frequency Response: 20Hz to more than 20kHz , +0, -.5dB 
Hum & Noise: 94 dB below 75 watts 
Dimensions: 15" X 10" x 9" 
Weight: 43 lbs.

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