Sugden Masterclass IA-4


or from $15,295.00 today & 5 weekly interest-free payments of $300.00 with Laybuy

The IA-4 is our 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.

Available on back-order

SKU: IA-4 Category: Tags: , , Brand:


Inputs ​ Three line level, tape, MM phono, balanced
Outputs Variable pre-out, fixed out, loudspeaker out
Volume Control  Remote control RC5 compatible
Tape Monitor and record off



Line Input sensitivity 125mV
Phono Input Sensitivity 2mV (MM)
Power Output 33 Watts per channel
Frequency Response +/-1dB 14Hz-200kHz
Bandwidth  6Hz-300kHz
Signal to Noise >84dB
Gross Weight  (packed) 20kgs
Dimensions 165 x 430 x 440mm (hwd)