Category:Mid High Fidelity
Country of Manufacture:Japan
Release dates:1968 - 1971
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Stereo
Frequency Response:( 3dB): 7½ ips: 50Hz - 15kHz
Wow and Flutter:7(RMS): 0.25% at 7½ ips. 0.35% at 3¾
Sound quality rating:5 / 10
Long-term reliability rating: 5/ 10
The MR-910 was a compact domestic quarter-track stereo recorder with two built-in 4″ speakers and a power output of 1.5 watts per channel (undistorted – maximum power per channel was 1.8 watts).
Other features included sound-with-sound, a ‘joystick’ type function
lever, 7″ reel capacity. two speeds (7½ and 3¾ ips) and
a three-digit position indicator.
Price when new (in the UK) was about £73.
Crosstalk: 50dB channel-channel. 65dB track-track / Hum and noise: 40dB below peak recording level at 7½ ips / Audio output power: 1.5 watts per channel undistorted, 1.8 watts peak / Inputs: microphone: 0.3mV 25K. line / aux: 100mV 1.8M / Outputs: ext. spkr 8 ohms. headphones 8 ohms or 10K / Speaker(s): two internal 4″ speakers / Dimensions: 17 x 18½ x 7″ (432 x 470 x 178mm) / Weight: 18 lbs (8.5 Kg) / quarter-track stereo