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(!!!) (#1 CV4003=M8136 PAIR from 1968) CV4003=M8136=12AU7 Mullard Mitcham plant UK NOS copper grid posts large "O" getter halo 1968 (2nd series) 2-3% matched

$ 148.88

1 low noise pair) CV4003=M8136=12AU7 Mullard Mitcham plant UK NOS copper grid

posts large "O" getter halo 1968 same date codes (631 seres, 2nd series) 2-3% matched

original boxes in poor condition - tubes are in white boxes

1 tube) 9.0ma/9.6ma Gm=2000/2100

1 tube) 9.2ma/9.6ma Gm=2100/2100

 

Matched  on Amplitrex

Good Ma range 8-10ma

Good Gm range 1800-2200

 

- very good midrange detail

- sweet and smooth sound

- good bass

- very good audio 12AU7

- low Noise and not microphonic 

- one of the best pairs of CV4003 in 22 years

 

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

 

 

 

 

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