A single 12AX7/12AT7/12AY7/12AU7/5751 contains TWO circuits within the tube. These tubes are tested to find the INDIVIDUAL SINGLE TUBES in which these two circuits are MATCHED - 1 tube contains two circuits. We found our suppliers could not provide us with enough high quality Matched Preamp Tubes so we designed and built our own Matching machine accurate to .00002A measurement - super accurate. Now we can provide matched high quality preamp tubes all the time. EACH INDIVIDUAL TUBE IS HAND TESTED IN OUR TUBE MATCHING MACHINE. ONLY THE BEST ARE SELECTED AS "TORRES MATCHED TUBES" The benefit of this tube in a guitar or bass amplifier is a matched output section. With a matched triode the upper and lower portions of the output waveform will be much more equal. When this waveform is not equal, differences are cancelled out in the feedback loop of class A/B amplifiers and are noticed as a lack of sustain or apparent "dead spots" in areas of the fret board. At high levels at all frequencies, sustain will be improved. This is even more critical in Class A amplifiers such as the Torres Class A Models, Vox AC-30's, Matchless and other Class A amplifiers. Improvements are heard in both Class A and Class AB amps. Use the Matched tube in any application where a ECC83/12AX7 phase inverter/ driver is used. For really detailed and perfect tone MATCHED PREAMP TRIODES can be used in ALL POSITIONS of your amp. They are a very noticeable improvement in tone in your amp!! |
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