Below is a small selection of some of the mains distribution options we have available.
Please note most blocks do not include mains input cables, if in doubt please ask
for more details.
Project Power Block
The Project Power block is an unfiltered mains distribution block. The housing is
made from a very well screened and sturdy steel case, and two of the sockets are
well spaced allowing plenty of room for wall wart type power packs to be used side
by side. There are 4 and 6 output versions available, with options of either a standard
IEC input (as shown below) or the 16A square IEC for very high current applications.
-Project Power Block 4 outlet with standard IEC input: £109.00
-Project Power Block 4 outlet with square 16A IEC input: £169.00
-Project Power Block 6 outlet with IEC input: £169.00
-Project Power Block 6 outlet with Isquare 16A IEC input: £229.00
Supra 6 way block
The Supra 6 way block is made from an aluminium shielded chassis and features the
Tommy Jenving designed 3 way surge protection system as well as non intrusive filtering
ensuring maximum reduction in spurious mains interference
LoRad MD06-BS/SP 6 way mains block £149.99
LoRad MD06-BS/SP 6 way mains block with LoRad 1.5 1M IEC mains cable: £169.99*
Edwards Audio Iso1
The Edwards Audio Iso1 uses a high quality mains isolation transformer, an approach
we’ve been championing for many years as they help reduce a lot of mains noise without
all the side effect of a lot of other conditioning methods (squashed dynamics and
an overly smoothed sound for example). Originally intended to be used with the turntables
we find its possible applications much wider and it will work superbly with many
sources and pre amplifiers too - in fact anything that draws under 40 watts of power
(if the manufacturer of an item doesn’t state power consumption then you can use
a plug in power monitor to measure it, we have one available for loan or they are
available from many DIY and electrical outlets, often very cheaply). It also features
an internal DC blocker which not only ensures that the transformer is quiet at all
times but also improves the overall sound too. It is intended to be used on one item
at a time, this way it ensures that not only does it help clean the mains it also
prevents that item polluting others in the system (which is especially useful with
items with switch mode power supplies which are often very generators of noise).
The improvements vary depending upon the type of item it is used with, but we consistently
find benefits in dynamics and timing, with a seemingly lower noise floor and less
grain and hash, with none of the negative side effects common to other filters and
conditioners. Don’t be put off by its low price, we find it can work wonders even
on very hi-end items.
These are available for both 240 and 110 volt operation and can be supplied with
other mains outlets sockets for use in countries outside the UK.
Edwards Audio Iso1 £199.95
The Sirius is 6 way mains block with IEC input featuring various innovations including
an ‘inductive resistance gate’ which claims to prevent cross contamination between
devices connected to it. It also has equal resistance paths for each socket, ensuring
each socket is fed identically. It will also remove high voltage spikes and RF interference
and can even be hung on the wall if required.
-Isotek Sirius 6 way block: £395
Heretic Audio Copper Star
The Copper Star is a purist 6 way mains distribution block made in the UK by Heretic
Audio. Every single element used in its construction is the result of careful listening,
resulting in the best sounding mains block we’ve heard to date. It’s housed in a
casing made from multiple layers of precision CNC cut birch plywood and thus avoids
the use of metal and plastics in its chassis, so it’s low static, low resonance and
naturally non ferrous.
Unlike many blocks on the market the Copper Star is a truly star wired design, this
means all items connected get the same excellent quality of signal (in the more common
bus bar or star earthed mains blocks the sockets furthest away from the mains input
The block is entirely hard wired with PTFE covered high purity OFC copper, and no
filtering or suppression is used at all, which we find results in the widest and
most vivid dynamics. The input is a 10A IEC socket and so can be used with almost
any high quality mains cable.
-Heretic Audio Copper Star mains distribution block: £399.99
The Sigmas is a high end mains conditioner with very high current capability and
full star earthing. It features six sockets mounted on the rear, each of which is
individually filtered to offer some isolation from one another. Two of the sockets
feature Isotek’s ‘Direct coupled design’ claimed to allow an almost unlimited transient
ability making them perfect for integrated and power amplifiers. The other four medium
current outputs use adaptive gating which auto senses the requirement of filtering
required. It comes with its own mains input cable and uses electronic breakers for
safe and easily resetable fusing.
Above: The distinctive cut outs underneath the fascia allow access to two two thermo-magnetic
breakers which also double as power switches
-Isotek Sigmas available in Silver or Black: £1,495
The Titan is superb mains conditioner, reducing noise and allowing a more effortless
and detailed sound with minimal dynamic compression. It features two mains socket
outputs which you can run any un filtered multi-way blocks off, alternatively you
can connect a 6 way Isotek Multi-Link socket to the Neutrik connector giving 8 sockets
in total. Its current ability is very substantial so a whole system can be run from
one Titan. The titan comes with a 1.5M Isotek mains input cable.
Isotek Titan available in Silver or Black: £2,250
Isotek Multi Link 6 way socket expander with 1.5M cable: £650