Following my test of the Tona MC step-up transformer - I just had to have a pair. These trannies just did something to the top - say two, maybe three, octaves - that pleased my ears. More air, more easy listening. Sorry to say, but these SUTs beats my beloved MC4 by a small margin - and aren't we always searching for this little extra? These things that make us enjoy our record collection just a little more...

I ordered the ratio 1:20; this makes 26 dB gain and is close to the "12 Ohm" (25 dB) input of my EAR-MC4 and works well with all my cartridges, from Anna-D and MSL to X40.

Tona-website: https://tona.dk/
Tona-DIY: https://tona.dk/tona-sut-step-up-transformer-matched-diy-set/

 

Excerpts from Tona website:

• Developed in-house in Aarhus, Denmark with Gyraf Audio, maker of high end tube audio equipment for the professional market
• Inputs, DIY: any ratio between 1:10 and 1:40)
• Toroidal nano-crystalline transformers wound in-house.
• 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)
• 2 years warranty

Tona review (Michael Fremer):
https://trackingangle.com/equipment/a-beaut-of-a-sut-from-tona

Tona #2

Obviously I couldn't live without a Tona SUT for both my systems...

Black is in, yellow is out. Red is PLUS. Simple as that