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Sound Rating: 5 / 10 # Owners: 1
Relaibility Rating: 5 / 10 Views: 549

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Technical Details

Brand: Tesla

Model:Sonet Duo

Category:Mid High Fidelity




Country of Manufacture:Czech Republic

Release dates:1959 - 1962

Tracks:1/2 Rec/PB

Speeds: 1 7/8, 3 3/4

Max Reel Size("): 7"

Number of heads: 2

Head Composition: Permalloy

Head Configuration: Stacked/Inline

Auto Reverse?:No

Frequency Response:(all 3 dB): 3¾ ips: 50Hz - 12kHz

Wow and Flutter:0.4% at 3¾ ips and 0.6% at 1ips

Signal-to-Noise Ratio:35dB

Sound quality rating:5 / 10

Long-term reliability rating: 5/ 10

Additional Details


The Sonet Duo was first developed in 1959, a direct derivation of the single speed Sonet. It had two speeds (3¾ and 1 7/8 ips), a digital tape counter and push-button switching of input connections. The biggest criticisms against the Sonet Duo was that it was quite heavy and that it could only handle a  maximum reel size of 5″ (eventually addressed with the later Sonet B3). Nevertheless, this machine was still selling well in Europe in 1966.

Additional Info

Audio output power: 1.5 watts / Speaker: 4¾ x 6″ / Weight: 27½ lbs (12.5 kg) / Dimensions: 13¾ x 7½ x 11¼” (349 x 191 x 286 mm) / half-track mono


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