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Sound Rating: 5 / 10 # Owners: 1
Relaibility Rating: 5 / 10 Views: 339

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Technical Details

Brand: EMI


Category:Mid High Fidelity



Country of Manufacture:United Kingdom

Tracks:1/2 Rec/PB

Speeds: 3 3/4, 7 1/2, 15

Max Reel Size("): 10.5"

Number of heads: 4

Head Composition: Permalloy

Head Configuration: Stereo - Stacked

# Motors: 4

Auto Reverse?:No

Voltage(s): 220-240v

Frequency Response:30 & 15 ips: 50Hz - 15kHz (all 2 dB)

Wow and Flutter:total R.M.S. 7better than 0.15%

Signal-to-Noise Ratio:55 db unweighted

Sound quality rating:5 / 10

Long-term reliability rating: 5 / 10

Additional Details


I imagine that The Beatles would have probably recorded their first studio demo tapes on these machines at the EMI studios way back back in 1962.
The following text comes from the original sales brochure –
The TR 90 can be presented in any of three basic configurations –

Rack mounted

The transportable version is in two basic sections, the transport unit and amplifier unit. There are many variations to the basic model, such as half track, full track, dual track or stereophonic.

Additional Info

Total harmonic distortion: 2% (depending on tape used) reached 0 VU at 1kHz / Bias frequency: nominal erase & bias frequency – 100kHz / Valve complement (basic model): U709, 2 x ECC82, EF86, 6BW6, 3 x ECC81, 2 x ECC83, 1 x EZ80 / Rewind speed: approximately 1 minute for standard 10″ reel / Audio output power: 2 watts into 5 ohms or 10 watts into 15 ohms (optional) / Outputs: 600 ohm balanced line out / Recording level meter: VU meter with 3 position switch, line in, line out and record level. also used for bias testing / Dimensions (transportable version): two cases each 14½ x 20 x 16½” (368 x 508 x 419mm) / Weight (transportable version): two cases: 80 & 58 lbs (36.4 & 26.4 kg) / variable – see text


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