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(!!!!) (Best Pair #1) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/9.4ma and 8.8/9.5ma) 1-2% matched (same Gm)
(!!!!) (Best Pair #1) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/9.4ma and 8.8/9.5ma) 1-2% matched (same Gm)
$ 279.99
1 very low noise pair) CV4003=M8136=12AU7=6189 Mullard UK box plates NOS 1978 rebranded "6189 RTC" 1981 in white boxes (RTC=Radiotechnique, France)
1 section) 8.8/9.4ma Gm=2000/2100
1 section) 8.8/9.5ma Gm=2000/2100
Tested on Amplitrex
Good Ma range 8-10ma
Good Gm range 1800-2200
great midrange and good bass, sweet presentation
Low Noise and zero microphonics
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
- Schiit Vali 2
See more: vacuum tube
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 (Best Pair #1) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/9.4ma and 8.8/9.5ma) 1-2% matched (same Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_594f3522-c775-4dc4-827b-125b71462dc9.jpg?v=1696778192){kind=link}
 (Best Pair #1) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/9.4ma and 8.8/9.5ma) 1-2% matched (same Gm) "Pin It")