‘Adagio’ TDA1541A non-oversampling DAC

When I first listened to DACs, I concluded quite quickly that ‘multi-bit’ DACs sounded more like music to me, than ‘bitstream’ DACs – more dynamic & ‘alive’.

The TDA1541 was originally developed by Philips (in 1985) as a high performance stereo DAC.  The ‘A’ version was manufactured between 1989-1995.  It was (is still?) regarded as one of the best sounding DACs ever made.  This chip was used in almost 100 different CD players Continue reading

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Quad 33 restoration (Pt 1)

The Quad 33 preamplifier is 50 years old, now.

It was introduced by Quad Electroacoustics in 1967 (to partner the 303 power amp) and 120,000 units were reportedly manufactured over 15 years.

The Quad 33/303 was Quad’s first Solid State consumer preamp/power-amp set.

My Quad 33 is serial no.6184, which means probably late 60s-early 70s manufacture. Continue reading