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Amperex Bugle Boy 12AX7 / ECC83 - matched pair, phono grade

Amperex Bugle Boy 12AX7 / ECC83 - matched pair, phono grade
Amperex Bugle Boy 12AX7 / ECC83 - matched pair, phono gradeAmperex Bugle Boy 12AX7 / ECC83 - matched pair, phono grade
Price: $224.00
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Item Number: 982
Manufacturer: Amperex
Description

The 1959 Amperex Bugle Boy 12AX7 / ECC83 tubes in this precisely matched pair have gray plates and large halo getters. The white print has the Bugle Boy label with treble clef (partial--see photos for condition). T
he 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. Photos are 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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