1 Matched Pair) 12AU7=ECC82 Mullard Philips ribbed plates NOS 1974 

1 tube) 9.8/9.4ma and Gm=2000/1900 (Gf2-B4D3)

1 tube) 9.5/10.5ma and Gm=1900/2100 (Gf2-B4D2)

 - smooth midrange, good bass, musical, low noise

• Matched on Amplitrex
• Good Gm range 1800-2200
• Good Ma range 8-10ma
• Low Noise and not microphonic

Recommended for

- Concert Fidelity CF-080LS Hybrid Line Stage Preamplifier
- Ampeg SVP-PRO Bass Preamp
- Velleman K4000 kit
- Audio Note CD2
- ROTH AUDIO MC4 MUSIC COCOON 2009
- Eastern Electric Minimax
- Hovland