1 slightly microphonic tube) JHS-12AT7 Sylvania black plate “”D”” getter 1953

1% section balance

1 section) 11.2ma Gm=5800

1 section) 11.2ma Gm=5900

Good Ma range 8-10ma

Good Gm range 5000-5500

Tested on Amplitrex

Recommended for

– CJ PV10A
– VTL
– Manley audio gear
– Manley Reference Cardioid mic
– Atma-Spere Preamplifier MP-1 Mk. III
– Lector CDP0.6T
– Berning
– Audio Experience Balanced A2
– mics
– Art Pro VLA II
– Monarchy SE250