Sugden Masterclass IA-4

Flagship Class A integrated amplifier

£6,364.00£6,495.00

Sugden IA-4 Custom Blue
Sugden Masterclass IA-4 £6,364.00£6,495.00

Masterclass IA-4

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.

Technical Specifications

  • 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)

For a complete list of potential custom anodising finishes, please visit

http://www.anodising.com/swatch.html