Ampex 861

The Ampex 861 reel-to-reel tape deck is part of the Ampex 800 Series, produced around the mid-1960s as a stereo tape recorder designed for both consumer and professional use. It operates on a 4-track, 2-channel stereo/monaural system supporting a single tape speed of 7½ inches per second, which balances audio fidelity and tape usage efficiently.

Key technical specifications include a frequency response ranging from 50 Hz to 15 kHz, wow and flutter of 0.15% at 7½ ips, and a signal-to-noise ratio of 46 dB. The total harmonic distortion is around 2%, ensuring fairly clear and faithful audio reproduction. The unit accepts line-level inputs (200 mV) as well as microphone inputs (1 mV) and outputs at 1V line level. It has an output power of 6 watts, suitable for driving external speakers, and many models like the 861 were paired with Ampex's 813 slide-on speakers for a complete system.

Physically, the Ampex 861 measures approximately 483 x 343 x 190 mm and weighs about 17.8 kg. The device often came housed in a walnut-finished case, offering both durability and aesthetic appeal. The 800 Series, including the 861, featured unique recording controls and solid build quality that made them reliable as well as straightforward to operate once familiarized with the controls.

Overall, the Ampex 861 is a robust, mid-1960s stereo tape deck with solid performance specifications for its time, including low wow/flutter, good frequency response, and convenient input/output options. It remains sought after by vintage audio enthusiasts for both playback and recording capabilities.