To add value and enhance the functionality of
the Quad II we can fit a switched and fused IEC mains socket, HQ Gold
connector and Loudspeaker barrels. We also add an input coupling capacitor. The
coupling capacitor modification is essential if you want to connect your Quad II to a control unit
other than the Quad 22. Some preamplifiers/control units have a low
impedance DC coupled output and connecting such a unit to an unmodified Quad II will
incorrectly bias the first stage. The resultant sound quality is far from
To carry out the modification, the
pre/driver tag board is dismantled and moved out of harms way to allow the chassis to be cut
and drilled to accept the IEC block and phono connector. The old 4mm sockets are
replaced with gold plated loudspeaker barrels.
As there is a mains fuse inside the new
IEC block, the old fuse holder and fuse is removed from the rear of the
chassis and replaced by a blanking grommet. This conformal arrangement
is much safer.
The mains voltage tap on the rear of the
unit is today also regarded as unsafe. As an option, we can remove it
and replace it with a blanking plate. The mains tap is then only adjustable
by unscrewing the bottom panel.
The resulting modification allows the Quad
II to be used with virtually any control unit/preamplifier. The convenience
of having an RCA input and a mains on-off switch quickly becomes apparent.
The cost of this modification including a
full service as above (less valve, transformer and choke replacement) is £180
per amplifier or £340.00 a pair.
If your Quad II chassis needs a face lift
we can strip, prime and spray with grey or charcoal, metallic paint. This
includes the chassis and transformers, not the bottom plate. The whole unit
is dismantled and unwired (gutted) and transformers & choke removed. Add
£75.00 per amplifier for this option.
NEW BOX SMOOTHING CAPACITOR
Due to popular request, and to
preserve the Quad IIs neat internal layout, the replacement F&T dual
smoothing capacitor can be inserted inside the original TCC box case. To do this,
we carefully unsolder the end of the box and wire the FT dual capacitor to the screw
terminals. The capacitor is then sealed inside the box and re-sprayed. The
original TCC labelling will still be retained. The extra cost for this
option is £15.00 per amplifier.