Rich, deep bass, lush mids and silky highs. Excellent spacial effect as well. Vocals shine. Way better than GE Jan 5654 tubes by a large margin. These tubes make it difficult to turn off the system at the end of the evenings to get to bed.".
Here we have for sale is an outstanding rare yellow label NOS tested Mullard 12AX7 ECC83 Tubes. PERFECT 100% testing. BALANCED Triodes. Rare tube with the yellow label only made for a 3 yr period 1962-1965.
Here we have for sale is a great NOS tested Mullard 12AX7A ECC83 Tube. NOS test results with Platinum BALANCED Triodes. PERFECT Tube! I61 series tube with the 14mm grey plates, copper rods and O-getter.
Tests 1631/1638 in a Maxi-preamp 2 where typical NOS is 1400-1600 and min is about 950 at 200 volts. Listening tested for excessive noise and microphonics in Maxi-preamp noise tester. Long Plate Halo Getter 7025/12AX7.
I have 1 Good Strong Perfect Balanced Low Noise Mullard 7025 / 12ax7 tube Labeled for Webcor.This tube test 45-46 where 32 is the minimum good and new tubes test 48 to 50 on are tv7 tube tester. .