RFT ECC83 / 12AX7
-Hand Selected from large Batch
-Mostly 70's & some very early 80's
-Very Good NOS Condition
Description
NOS RFT ECC83 / 12AX7 - Erfert & Rohrenwerk factory variants. In very good NOS condition with all original stamps. There is premium price on these tubes as the Pins are cleaned using special solutions for longevity and better conductivity for now and in the future. Both Triodes are tested and also additional 2 stage microphonics testing process then selected into categories.
Measurements
Tests range from 1.1 ma @ 70mu - 1.8ma @ 95 mu!
Measurements are all conducted via regulated power supply and finely tuned bias for consistent and accurate measurements.
All Tubes test quite as expected and very much within spec.
Tone Profile (Re-vised on alt Gear)
*Strong defined and articulate Mid range which exhibits quite a robust and focused tone. If you love your Mid Range Freq's with a good balance and nice Body (Low Mid - Mid) you'll likely Love it.
*Has nice quick percussive attack on transients such as Drums etc
*Great Tube to reinvigorate a darker or dull sounding preamp.
Guitarists
Has the quintessential robust mid range focus & articulation in addition to percussiveness / attack and body that vintage or modern rock / hard rock guitarists seem to love. Quite harmonically rich overdrive tone. Great Tube to reinvigorate a darker or dull sounding guitar amp.
Happy Listening :)



