Description

This is a suitcase version of the A77 with inbuilt stereo amplifiers and dual range stereo speakers.
I
t is a 2 track machine so it has a better
signal-to-noise ratio than a 4 track machine. (approx. 3–4 dB quieter, ~66–67 dB at 7.5 ips)

It is missing the original suitcase lid but looks good with the perspex cover.

The Mk1 dates from 1968 and shows some signs of it's age, a few scratches and chips/cracks in the case and in the perspex cover.

It has been set up using professional test tapes and calibrated to RTM SM911 tape.
Performance is very good and it sounds great.

This A77 has been fully refurbished and serviced -

- Heads and guides thoroughly cleaned
- Motor capacitors replaced
- Electrolytic capactors on all plug in boards replaced
- Surge protection capacitors (RIFA) replaced
- Record relay updated
- Brakes adjusted
- Tape counter and belt replaced

Fully calibrated to RTM SM911
- Playback head alignment
- Record head alignment
- Playback and record levels
- Frequency response check and adjustment
- VU meter calibration

Sold with
- Power cable
- Perspex Cover

Technical data:
3 heads: record, playback, erase
3 motors 2 x spool and 1 x capstan
Reel sizes up to 10.5 inches
Speeds 3 3/4 and 7 1/2 ips
Wow and flutter less than 0.08%
Frequency response 30 Hz to 20 kHz
Signal to noise ratio 66 dB
Total harmonic distortion 0.6%
Output: 1.55 V (line)
Input 25 mV (line) 0.15 mV (microphone)
54 x transistors, 32 x diodes
Dimensions
41 cm (height), 45 cm (width), 20 cm (depth)
Weight 25 kg