Preamp Tonekit 12AX7 (4)

This is a the "4 12AX7" version of the Doug's Tubes preamp tube cocktail kit and we've received great feedback on it. The tonekit allows hi-fi and guitarists alike to experiment and "tube-roll" preamp tubes in different slots of their amp. Currently we're recommending the following :

V1 - Mullard CV4004 

V2 - Ruby 12AX7AC5 HG

V3 - Ruby 12AX7ACZ HG

V4 - Psvane ECC83