Preamp vs Amp vs Integrated
TL;DR
A preamp handles input switching, volume control, and signal buffering. A power amp does the heavy lifting to drive speakers. An integrated amp combines both in one box. Most budget audiophile amps (AIYIMA A80, Fosi ZA3) are integrated — one box does it all.
A traditional hi-fi audio chain has three separate stages: source → preamp → power amp → speakers. Understanding what each does helps you decide what to buy.
Preamplifier (preamp)
- Selects between input sources (turntable, CD, streamer, TV)
- Controls volume
- Provides tone controls (bass/treble)
- Buffers the signal at line level for the power amp
- Does NOT drive speakers — outputs a small line-level signal
Power amplifier
- Takes the line-level signal from the preamp
- Amplifies it to speaker-driving levels (watts of power)
- Usually has just one input (from the preamp) — no volume control, no source switching
Integrated amplifier
- Both preamp + power amp in one box
- Simpler, cheaper, more compact
- Most budget audiophile amps are integrated
Examples in our catalog
- Integrated: AIYIMA A80, AIYIMA A20 MONO, Fosi BT20A MAX
- Streamer / preamp / DAC (no built-in power): Fosi Audio S3
- Power amp with preamp bypass: 3e Audio A7
Common myths & realities
Myth
Separates always sound better than integrateds
Reality
Modern integrated amps like the AIYIMA A80 outperform many older separates rigs.
Ready to see this in action?
Browse honest, hands-on reviews of budget hi-fi gear that puts these concepts to the test.
