Description
(!!!!) (Best Overall Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded “6189 RTC” 1981 (13/12.8ma) (Highest mA and Gm)
1 low noise tube) CV4003=M8136=12AU7=6189 Mullard UK box plates NOS 1978 rebranded “6189 RTC” 1981 in white boxes (RTC=Radiotechnique, France)
13.0ma Gm=2600
12.8ma Gm=2600
Tested on Amplitrex
Good Ma range 8-10ma
Good Gm range 1800-2200
great midrange and good bass
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