Moth Audio Sphynx Preamp...
A few more by: Tron http://www.tron-electric.co.uk/digital/seven-dac/ Jadis http://www.jadis-electronics.com/en/js2-mkiii-34.php Valve Audio...
A few not mentioned yet are DACs made by: Deja Vu Audio http://dejavu-audio.com/vintage-hi-fi.html Silbatone...
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