Sugden Masterclass IA-4 Integrated Amplifier


All our orders are supplied ‘Factory Fresh’ – we aim to be in touch with expected delivery date within 2 days of purchase.

Free shipping – Not for sale outside UK/Europe



IA-4 is Sugden’s flagship and most popular integrated amplifier.

Weighing a substantial 20 kilos the IA-4 has a purposeful look and impressive build quality with plenty of input and output facilities including a high quality phono stage.

The class A power output circuit has been upgraded from the A21 series with a larger power supply and improved soothing and output capacitors, gold plated circuit boards, full relay switching and a precision input selector switch offer further detailing.

The pre-amplifier section of the IA-4 is a bespoke design, with surprising clarity and detail resulting in the ability to create a large performance with depth and height on any type of music.

Standard finish options are either black or silver – please contact us directly for Sugden’s custom colour options service!



Additional information


Black, Silver