A 20-watt amp gives you that extra headroom over smaller practice amps while keeping the volume manageable. It’s powerful enough to cut through a band mix in rehearsal or small venues, yet still works well at home when dialled back. Many players like 20 watts for its dynamic response — it can stay clean at moderate levels or break up naturally when pushed. Whether valve or solid-state, 20W amps strike a great balance between tone, power, and practicality.