Sugden Masterclass IA-4 Integrated Amplifier

The award winning Masterclass series has been in continuous production for over seventeen years. During this time the family has grown and benefited from significant improvements and upgrades. Recent arrivals include an entry level power amplifier, digital converter and headphone pre-amplifier.  Like all Sugden products each Masterclass is handmade at their factory in Yorkshire, England by a single highly skilled technician with many years experience.

The 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. Plenty of input and output facilities are on offer 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.  The most noticeable feature is the ability to create a large performance with depth and height on any type of music

Specifications