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(!!!) (#1 CV4003 Mullard Single 1968) CV4003=M8136=12AU7 Mullard Mitcham plant UK NOS copper grid posts large

(!!!) (#1 CV4003 Mullard Single 1968) CV4003=M8136=12AU7 Mullard Mitcham plant UK NOS copper grid posts large "O" getter halo 1968 (9.4/10.2ma)

$ 94.99

1 low noise tube) CV4003=M8136=12AU7 Mullard Mitcham plant UK NOS copper grid posts large "O" getter halo 1968 (631 series) (2nd series)

1 section) 9.4ma Gm=2100

1 section) 10.2ma Gm=2200

Tested on Amplitrex

Good Ma range 8-10ma

Good Gm range 1800-2200


M8136 on front of tubes

CV4003 on backside of tubes

great midrange and good bass

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

 

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