Hoffman AC30 board ; question about a bypass cap value

[archaos]

My question is about the bypass cap value of the Brilliant channel of the 1st preamp tube. Why does a .1 µF is used instead of a 22/25 µF one, like with the Normal channel ? What's the consequence ?

Thanx a lot.

[FYL]

With 100 nF mid/treble is boosted from around 750 Hz on, the higher frequencies at + 6dB or so.
 
Some versions used quite small bypass caps, down to 1 µF, AFAICT none went down to 100 nF (but I'm not a Vox specialist). Maybe it's a typo on Doug's schematics.

[archaos]

Thanks a lot !  Very helpful.

[archaos]

Have finally got the explanation concerning Doug's schematicsin Stephen Grosvenor's AC30 guide :

"...the AC30/6 Treble model has a different arrangement for the cathode biasing on V, where it has separate cathode components for each triode sction (rather than the shared cathode components in the Normal & Bass versions).
The cathode resistor for the triode of the brilliant channel is 1.5 k (as in the 2nd section), but the cathode capacitor differs in value & is .1µF (as oposed to 25 µF). This to provide the extended high frequency response of the brilliant channel."
 :glasses10: