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Class A Audio

FS: Cary Audio Rocket 88 Power Amplifier

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Price: $3500
Item Condition: Trade in, excellent physical condition and function
Shipping Options: Pickup is available,I can ship this item
Suburb or Town: Notting Hill
State: Victoria
Payment Method: Pickup - Cash, Paypal, COD Only
Reason for selling:

Further information: 

Location: Class A Audio, 8/585 Blackburn Rd, Notting Hill, VIC, 3168. phone (03) 8555 0735

 

The Rocket 88 is very interesting from several perspectives. It uses a "Retro" design Cat's Eye tube for monitoring output level for each channel. You can see them in the photo above left. These are the round green "things" on the left and right side of the amplifier front panel. They were used on various products back in the 1960s, especially on tape recorders (they were reel-to-reel recorders back then). Only professional recorders had VU meters, and this was long before LCD recording meters that we see on modern cassette recorders of all price ranges.

 

The Rocket 88 is switchable between functioning in Triode Mode (20 watts Pure Class A output per channel), and Ultra-Linear Pentode Mode (40 watts Class A/B per channel). There is a small toggle switch behind the far left KT-88 and far right KT-88 for switching each channel between these two modes independently, although I cannot think of a reason why I would ever use one channel in triode mode and the other channel in pentode mode. It may be just to keep the circuits as isolated as possible.

 

Specifications

Circuit: Push Pull, Balanced, Class A Triode, Class AB 

Ultra-linear

Tube Compliment: Four  KT-88 Output tubes, Two EL-84 Current Source Tubes, Two  6922 Input Tubes

Power Output: 20 Watts RMS per Channel in Triode Mode, 40 Watts per Channel in Ultra-Linear Pentode Mode

Inputs: RCA Single-Ended, XLR Balanced

MFR: 15 Hz - 30 kHz ± 1 dB

Output Indicators: Dual Cat's Eye Tubes

Size: 9" H x 10" W x 18" D

Weight: 42 Pounds

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