Originally designed for use in televisions and radios, 6CS7 tubes are rarely used in audio products. The chief designer and owner of Leben Hi-Fi Stereo Company, Mr. Taku Hyodo, who is often referred to as one of the eight best tube amplifier designers in Japan, has a fondness for the 6CS7 type, presumably because of… Continue reading 6CS7 Tubes: Data, Specifications & Usage

The Pentax *istD series marked a significant milestone for Japanese brand Pentax when it was introduced in the early 2000s. The series was the brand’s first venture into digital SLR cameras. The series built upon Pentax’s reputation for solid build quality, compact design, and advanced technology at an affordable price. The first camera in the… Continue reading Pentax *ist DS ~ 2025 Review ~ Photos ~ Impressions

In addition to a Leben tube amplifier, I’m also satisfied owner of Leben’s only RIAA so far, the Leben RS-30EQ, which both looks and sounds stunningly well. The RS-30EQ RIAA is based on a circuit including a single 6X5GT rectifier tube and two 12AT7s Jan Philips tubes. The European designation for the 12AT7 is ECC81. 6X5GT… Continue reading The Leben RS30-EQ RIAA, 6X5GT & ECC81 Tubes

When going through the photos in my blog post on my Leben amplifier, I noticed that the damper tube in this photo: was marked 6DN3, which I, funnily enough, hadn’t noticed before. I was of the impression that the CS-600 uses 6CJ3 tubes, which is stated on Leben’s official site. In the folder that came… Continue reading 6CJ3, 6DN3, 6CM3, 6CH3 and 6DW4B damper tubes