Tube vs Solid-State vs Modelling Amps: Which Should You Buy?

Right then — the amp question. Walk into any guitar shop and you’ll be pointed at three very different kinds of amplifier, and the salesperson’s opinion usually depends on what they’re trying to shift that week. So let me lay it out straight, after twenty-five years of gigging and a decade fixing the things.

Valve (tube) amps

Valve amps make their sound by pushing the signal through glowing vacuum tubes. When you turn them up, they compress and distort in a way that feels alive under your fingers — that “sag” and bloom is what players chase. The downsides are real: they’re heavy, they run hot, the valves wear out and need replacing, and they only truly come alive at volumes that’ll annoy your neighbours.

Solid-state amps

Solid-state amps use transistors instead of valves. They’re lighter, cheaper, more reliable, and they sound the same at any volume. Purists sneer at them, but a good solid-state clean tone is superb, and you’ll never replace a valve. They’re a sensible, low-fuss choice — especially as a knock-about practice amp.

Modelling amps

Modelling amps are digital: they use software to emulate dozens of classic valve amps and effects in one box. The technology got genuinely good a few years ago, and it’s where most of the value now sits. One modest modelling combo gives you cleans, crunch, high gain, delays and reverbs — the lot. For most players today, this is the smart buy, which is why our best practice amps guide is dominated by them.

So which should you buy?

If you’re starting out or mostly play at home, get a modelling combo like the Boss Katana-50 (check price) — maximum tones for your money, and quiet-practice friendly. If you gig regularly and crave that organic feel, a valve amp earns its keep. And if you just want something cheap and bulletproof to practise through, a solid-state combo will never let you down.