Joe Pass — £500 · Sweet Spot Rig

• The acoustic properties of the body add air and bloom that solid-body guitars can't replicate — resist the urge to compress this away
• Volume above 4 on a boutique clean amp in a small room will be very loud — these amps are designed for stage use and the tone at correct volume is very different
• Compression pedal at low ratio (2:1 or 3:1) adds sustain and evenness without audible pumping — the effect should be felt, not heard
• Guitar volume at 8-9, not 10 — the slight backing off removes some brightness and brings out the warmth of the body resonance.
• Flat-wound strings (or half-wound) change the tonal character significantly — they have less brightness and sustain, which for jazz is a feature, not a limitation.
• Play closer to the neck than usual — the reduced string stiffness near the neck pickup produces a rounder, fuller note character.

• ✗Playing at high volume without managing feedback — hollow-body guitars are acoustically live and will feedback freely at stage volumes. Amp positioning and pickup height affect this dramatically.
• ✗Running multiple pedals into the input — boutique amps are designed for the natural guitar signal. Too many pedals before the input changes the input impedance and alters the amp's response.
• ✗Adding compression to fix flat clean tone — a flat, lifeless clean tone usually means the amp gain or presence is wrong, not that compression is needed. Compression on a flat tone just makes it louder.
• ✗Using round-wound strings — they are brighter, last longer, and have more sustain, but they also sound more "electric" and less woody than flat-wounds for jazz.
• ✗High-gain or distortion of any kind — even a slight overdrive in a jazz context sounds wrong. The amp should be absolutely clean at all playing volumes.

Gibson ES-175 through a clean amplifier — Pass was the master of solo jazz guitar, performing complete solo concerts with bass notes, chords and melody simultaneously on one guitar.