Quad
303
Introduced 1967$1,599 MSRP
Peter Walker's long-lived 45Wpc solid-state power amplifier, famous for its output-triples circuit and green wraparound case, usually partnered with the Quad 33 preamp. Nearly all surviving units benefit from replacement of the original electrolytics and adjustment of quiescent current.
MSRP
$1,599
Used market · Good
$450
-72% vs MSRP
as of Aug 16, 2026MSRP to used market
From $1,599 at launch to $450 today.
Specifications
- Type
- power amplifier
- Inputs
- DIN line input
- Topology
- solid-state Class AB with output triples
- Weight
- 18 lbs
- Power output
- 45W x2 @ 8 ohms
- Published price
- 1599 USD
- Power into 4
- 70 W Ω
- Power into 8
- 50 W Ω
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