Difference between SRV and Classic switch
The Classic and the SRV switches are similar in tones but have these differences.
Both switches have the same 16 treble bleed settings.
The Classic has 4 KingTone Switch settings and 1 treble bleed bypass setting.
The SRV has an extra KingTone Switch setting and the treble bleed circuit is always active.
The Classic has its 4 KingTone settings spread further apart than the SRV which has them focused around the SRV/Albert King type tones.