Amplifiers

Sugden IA-4 Flagship Integrated Amplifier by John Hoffman

by John Hoffman | December 13, 2025

  Sugden IA-4 Flagship Integrated Amplifier I have wanted to hear a Sugden amplifier in my listening room for years. I am a big fan of... [READ MORE]: Sugden IA-4 Flagship Integrated Amplifier by John Hoffman/

Naiu Laboratory GmbH Ella MKIII amplifier by Terry London

by Terry London | October 19, 2025

    I received several emails from dedicated readers asking me if I had ever heard of the Naiu Labs Ella MKIII amplifier, which... [READ MORE]: Naiu Laboratory GmbH Ella MKIII amplifier by Terry London/

Linear Tube Audio MicroZOTL Preamplifier Level 3 by Terry London

by Terry London | September 10, 2025

    I have almost a decade of reviewing experience with Linear Tube Audio’s creations that are based on David Berning’s very... [READ MORE]: Linear Tube Audio MicroZOTL Preamplifier Level 3 by Terry London/

Backert Labs Rhythm 1.4 tube preamplifier By Terry London

by Terry London | June 28, 2025

    I have been a long-time admirer of Backert Labs, which is located in Hockessin, Delaware. This company exclusively designs... [READ MORE]: Backert Labs Rhythm 1.4 tube preamplifier By Terry London/