Selecting the Right Tube for V1

Author: KMcAulay  Date Posted:3 July 2025 

V1 Preamp Tube Rolling & Tone Simulator

See how changing your amp's V1 valve impacts gain, headroom, volume, and fizz
Important Evatco Tip: Dropping gain from 100 to 50 does NOT cut overall output volume by 50%! It primarily increases clean headroom and smooths saturation before driving power tubes.
Clean Headroom
 
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Saturation / Drive
 
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Fizz & Noise Floor
 
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Perceived Volume
 
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Signal Harmonic Shape Pure Sine (Clean)

12AX7 / ECC83 / B759

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