The cathode current is only 0.15 mA, but the preamplifier delivers a 3.5x gain. There is more detail on his website. It would be interesting to subject this circuit to a full audio analysis and ...

Japanese high-end audio brand TAD Labs is adding to its current Reference Series of hi-fi products. The new TAD-C700 preamplifier ... while a dedicated amp circuit for each line output aims ...

British hi-fi brand Quad has revealed reimagined ... retro-futuristic designs. With the Quad preamp, Quad has formulated a new circuit design with a low-noise custom toroidal transformer and ...

If your music system includes a turntable, a phono preamp is a must-have component in the product ... level amplifiers and delivers a sound you can audibly hear through your hi-fi system. At the same ...