Discrete Voltage Regulator Review – Cambridge Audio Azur 851N


The Sparkos Labs discrete voltage regulators have been reviewed in a Cambridge Audio Azur 851N Network Audio Player.

I have replaced the 3-Terminal IC regulators with
the Sparkos Labs discrete voltage regulators in my discrete regulators1
network audio player, Cambridge Audio Azur 851N.
This player uses many regulators for the dual DAC
circuit, ten LM78XX, LM79XX were used in the DAC
analog output circuit. These regulators are
supplying +5V for DAC, +-5V for I/V conversion
circuit, +-15V for LPF circuit with op-amps, DC
servo circuit, etc. I thought that there is room
for improvement on this player with replacing
these regulators.

Installation is very easy due to its height and
width of the discrete regulator is completely the
same as the TO-220 package, the heat sink is
perfectly fitted, but some electronic components  Discrete_regulators_cambridge
around the regulator might touch the front because
of thickness. So you should check the space in
front of the regulators before replacing.

First impression of after installation, the sound
goes brilliant! Listening to piano music, it sounds
smooth and free from distortion. After
a week burn-in, the mid bass becomes 3D-like due
to removing muddiness. Improvement of transients
makes it possible to hear many barely audible
sounds unconsciously. Especially percussion like
conga is reproduced more and more realistic. The
sound stage is wonderfully encompassing. There is
a fine Isolation to the vocals and other acoustic
instruments, very detailed but not harsh. There
seems no limit to the highs and lows!

Replacing 3-terminal IC regulator with Sparkos
discrete voltage regulator is one of the best
upgrade pass to improve the performance of your
audio system with a little effort.

Kinds of regards,


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