P42 Climax v6.1.0
Class A amplification can now be disabled.
P42 uses both Class A and Class AB amplification stages before hitting the transformer. When we rewrote the code moving from v5.7 to v6.0, Class A was accidentally bypassed — meaning you were only hearing Class AB (mostly odd harmonics), resulting in a cleaner, more pristine sound.
Instead of just fixing the mistake, v6.1 makes it a feature: you can now switch Class A (even harmonics) on or off.
- Class A On: Original P42 sound with punchy midrange, silky highs, and subtle low-end weight.
- Class A Off: Cleaner, more transparent tone from Class AB only.