Country of Manufacture:Germany
Release dates:1961 - 1964
Speeds: 1 7/8, 3 3/4
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(all 3 dB): 3¾ ips: 50Hz - 13kHz
Wow and Flutter:0.11% at 3¾ ips. 0.16% at 1 ips
Signal-to-Noise Ratio:40 dB
Sound quality rating:5 / 10
Long-term reliability rating: 5/ 10
Situated in the German town of Schwarzwald, famous for its cuckoo clocks, the firm
of Josef Burger Söhne (Josef Burger Sons) had for years produced precision clocks and watches, moving to clockwork tape recorders in about 1950. They began making all-battery recorders in 1956 (the name Butoba
comes from Burger Tonbandgerät meaning ‘Burger Tape Recorder’).
Butoba machines were renowned for their sound and mechanical quality.
The MT5 had a massive flywheel for speed stability and a 7 x 5 inch internal speaker.
The mechanics were built to last and the recorder utilized two motors: one for the capstan and one for reel movement. The battery compartment contained eight batteries, but they weren’t connected as one would expect
– (in series).
Bias frequency: 35kHz / Transistor / valve complement: OC603, OC75, OC71, OC76, OC74 (x3), DM71 magic eye indicator / Speed deviation: 0.11% (3¾ ips), 0.16% (1 ips) / Audio output power: 1.2 watts / Inputs: microphone (200 Ohm, 200mV) – radio (100 kOhm) / Outputs: line 200 ohms, approx 100mV / Speaker(s): 7 x 5 inch / Power supply: 8 “D” cells, connected in two groups of 6V, 6V DC or 220V AC / Electronics power consumption: playback: 35 mA, recording: 170 mA / Motor power consumption: play / record: 80 mA, fast wind: 150 mA / Battery life: 20-40 hours / Dimensions: 12 x 6 x 9¼ inches (305 x 152 x 235 mm) / Weight: 12 lbs (5.5 kg) including batteries / half-track mono