Electro Harmonix / 12BH7A-ELECTRO HARMONIX MATCHED PAIR

12BH7A-ELECTRO HARMONIX BALANCED 12BH7A-ELECTRO HARMONIX BALANCED Click on image(s) above to view larger
£32.00

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Electro Harmonix is the top end brand which is owned by the Sovtek corp. Many of these valve designs are new designs based on old classic items.
Special Matched Pairs


The Electro Harmonix 12BH7A is designed to be a direct replacement for American made 12BH7 and 12BH7A in used audio or guitar applications.

The 12BH7A was used by many American guitar amplifier manufactures & high end audio companies including by Conrad Johnson and Ampeg in the original SVT designs.

Electro Harmonix 12BH7A uses the same size envelope of the original USA designs. The valve and features 22 mm glass envelope circumference and has a ladder plate design.

Sonically the valve has excellent clarity and provides a musical balanced sound across the audio range. The valve is strong in the midband with clear and well defined bass response.

This is an excellent modern production 12BH7A that gives the tonal response of the classic American made NOS 12BH7A.

We offer these in Specially Selected Balanced triode sections in matched pairs for Audio Phono stages.

These Balanced preamp valves are Dynamically Drive tested under real working condition and are matched on dB gain. They also have passed the following tests:

Gain (db) Drive Tested
Transconductance (gm) Drive Tested
Output Drive Tested
Noise 1 (signal to noise)
Noise 2 (Aural)
Microphonics Test 1(Ambient)
Microphonic Test 2 (Shock)
Cathode Test

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