The 7025 with a bit more edge and super low microphoniics. Version of the 12AX7 that meets all specifications required for the tube to be designated 7025 and SPAX7®
The TAD 7025WB Highgrade is tested and meticulously selected for the lowest noise and microphonics for use in the critical first preamp stages of High-Gain guitar amplifiers where noise and microphonics could be an issue.
The TAD 7025 WB Highgrade has a balanced tone with an little emphasis on the upper mid-range that gives a nice string attack and clarity to the sound while retaining a strong and defined bottom end. The 7025WB Highgrade will also do equally well in vintage guitar amplifiers.
The TAD 7025 Highgrade can replace any ECC83, E83CC, ECC803S, 12AX7, 12AX7A, 12AX7M, SPAX7®, 12AX7WA/WB/WC/LPS/EH, 5751, 7025, CV492 and CV4004.
DISTINCTION from RT010 7025 and RT030 7025 / E83CC HIGHGRADE:
Compared to the RT030 and RT010, the RT093-HG shows a little more edge in the high-mid range. As a result, it asserts itself tonally very well, which makes perfect sense in a band structure. RT030 is emphasising the midrange a bit more and thus brings more warmth and a little less brilliance and depth definition than the RT010 and RT093-HG.
Due to their tonal structure the RT093-HG and the RT030 are even less prone to microphonics than the RT010 which qualifies for use with extremely microphonic-critical amps.
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