Sugden A21a Series 2 Remote Volume Pure Class ‘A’ Integrated Amplifier – 23 watts The Sugden A21a Pure Class ‘A’ Integrated Amplifier has a lineage stretching back nearly 50 years. In 1964 James Edward Sugden designed and produced the worlds first commercially available solid state pure Class ‘A’ amplifier the A21.The initial A21 was sold […]
