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Amperex Bugle Boy 12AX7 / ECC83 - matched pair, phono grade
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SOLD OUT
Item Number: 982
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Description
The 1961 Amperex Bugle Boy 12AX7 / ECC83 tubes in this precisely matched pair have gray plates and large halo getters (I65 series). The white print has the Bugle Boy label (partial). The Heerlen, Holland factory codes and matching date codes are etched in the glass.
Testing
These tubes test as new with balanced sections. They are precisely matched for both current draw (mA) and transconductance (Gm). They have been screened for gas, heater-cathode leakage, shorts, and excessive noise and microphonics on each triode section. They were tested at typical operating voltages on a laboratory grade
Amplitrex AT1000 (manual setting, fixed bias mode). Learn more about our
testing process here.
Noise and microphonics
These
tubes test as “phono/V1 grade”—the quietest range for noise and
microphonics—on our custom noise testing equipment. They are an excellent
choice for sensitive applications such as microphone preamps, DA
converters, and phono stages.
Pricing
These tubes are sold as a matched pair. They ship in new white boxes with test results for each triode section. Photo is of the actual tubes. Singles, when available, are listed as Item 561.
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.
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