Tona T20/40 – Moving Coil Step-Up Transformer

The TONA T20/40 SUT step-up transformer, is targeted enthusiasts and intended for moving-coil type cartridges. These traditionally provide a very low signal, and are difficult to amplify without noise.

The transformer is a match for tube amplifiers, as the very high gain at 1:40 can be an advantage. Can also be used with a (tube) RIAA with a good dynamic range at high levels.
At the same time, 1:20 with a more all-round gain, is usable for most cartridges with a higher output.
Tona T 20/40 has two separate inputs with completely separate windings on the primary side.

Specifications

• Developed in-house in Aarhus, Denmark with Gyraf Audio, maker of high end tube audio equipment for the professional market
• Two inputs 1:20 and 1:40
• Mahogany, oak or custom RAL color options
• Connectors can be customized as well the choice of balanced / unbalanced operation
(contact Sallingboe Audio for further details)
• Laminated soft iron case with 8 to 20 mm overall thickness
• Toroidal nanocrystalline transformers wound inhouse.
• The transformers are induction matched in stereo pairs before and after winding
• Matched in stereo within 0.2 dB from 20Hz-20kHz
• -3dB at 4 Hz and 60 kHz (measured with 4Ω cartridge output)
• Hand wired litz primary windings, (the technique involves a very strong force, that can only be applied by hand)
• Stable heavy base accepts all XLR and RCA cables
• 2 years warranty

Connectors
Gold plated RCA connectors.
Silver plated XLR connectors.
Special configurations are possible with custom choice of connectors.
Contact Sallingboe Audio for further details.

Design variations

MahoganyOak


8003

2009

1518

6005

6018

7016

7035

7042

3020

1512

5002

4010

4006

4005

3015

3003

8002

9005

9010

Dimensions
125 x 150 x 50 mm 4.9″ x 5.9″ x 1.96″ without frame
159 x 184 x 50 mm 6.25″ x 7.25″ x 1.96″ with frame
Total height: 63 mm 2.48″
Weight: 4.6 Kg 10 lbs