Country of Manufacture:USA
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:( 3 dB): 50Hz - 12kHz at 7½ ips
Wow and Flutter:less than 0.3% at 7½ ips
Signal-to-Noise Ratio:40 dB
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
The Knight KN 4120 was a quarter-track machine with a 7″ reel capacity and could play back stereo tapes through its internal amplifiers and detachable speakers but only record in quarter-track mono.
Features included two speeds, two wing enclosures each with a 6″ speaker, 6-watts per channel power output, separate tone and volume controls for each channel, sound with sound recording, single lever transport operation, neon recording level indicator, digital tape counter and preamplifier outputs.
Price when new was $139.95
Audio output power: 2 x 6 watts / Speakers: two detachable enclosures each with a 6″ speaker / Inputs: high impedance microphone and high level radio / phono / Outputs: external speakers and external amplifier / Speaker(s): twin wide-range 6″ inbuilt / Dimensions: 8½ x 21¼ x 14¼” (216 x 540 x 359 mm) / Weight: 33 lbs (15 kg) / quarter-track mono record, stereo playback of pre-recorded tapes