Back to tubes
The chip amplifier For my loudspeaker work I often use a very simple chip-based amplifier to subjectively evaluate characteristics like spectral balance and relative phase between different drivers. Assisted by simulation and measurements, of course. […]
During the last weeks, I enjoyed some 300 surplus LPs from a friend. Very nice ones! Browsing through them with a minimalist vinyl setup: turntable, solid state phono- and chipamp into Betahorns.I am spoiled by […]
Tube sound again
For objectivists the characteristics of tube amplification is mostly due to additional components of sound. Many tube lovers call it a higher purity of sound.Others again enjoy „easier listening“ in terms of warmer and maybeslightly […]
Bits are Bits ?
Recently I was testing several solutions to reproduce audio files, based on personal computers. Just to see if bits are bits. I had been using JPLay for years (with mixed results in terms of stability or […]
The Sound of Tubes ?
At TestHiFi we discuss and develop ways to measure aspects of music reproduction. Sometimes, working on my own loudspeaker projects, such aspects draw attention. About such an event I want to write this time. When […]
Some new HiFi adventures
A Re-Visit Back to a friend and customer’s place I had a strange experience which I would like to share. And still don’t quite understand … The System is complex and very high quality : […]
Faint sounds of distortion
Did you ever hear the noise produced by an audio amplifier under measurement, with resitors instead of loudspeakers connected? There is a lot of buzz, and sometimes hum. If components in an audio circuit produce […]
Digital HiFi Adventures – and Questions
Between 1990 and 2005 I worked with digital controllers for custom made horn systems in critical sound reinforcement situations. The convenience to have a variety of filters, delay and equalizing selected via a nice graphical […]