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We recently had a client purchase some of the ABS Expandable Sleeving cable sheilding, and to our delight he had a very similiar reaction to ours when we first tested it out!

G.S. wrote:

"Just a quick note to say I received the cables, listening right now
and I'm BLOWN AWAY guys!

Have to say that when I got the parcel I was struck with strong buyers

This week we had a customer leave an instagram review of a capacitor test they created, for some amazing photos of an array of hifi's from start to finish, check out jaudioresearch's instagram  PAGE


Miflex KFPM-01 Copper Foil Polypropylene Film Capacitors

I was introduced to Miflex capacitors over a year ago by a customer of ours - the finders fee was a couple of free samples for him, hand selected from the first batch, many thanks PT...

Since then we haven't looked back. We started with their copper foil paper / polypropylene in oil (KPCU) and their aluminium foil paper / polypropylene in oil (KPAL). They have been well received and we...

Glasshouse Ladder stepped, mono Charcroft / Seiden

Here at Hificollective we always welcome requests for products that are not standard. So following on from the stereo Glasshouse Seiden / Charcroft ladder stepped attenuator over 3 years we were recently asked to build up a pair of 100K mono versions.

No problem - let's warm up the soldering iron!

To those of you unfamiliar with stepped attenuators, they are generally used to...



Over a year ago, we had a client ask for some advice on their ‘replacement parts’ proposals for an Audio Research Reference 1 pre-amp. Six months since the last parts were ordered, here’s P.B. talking us through what he’s changed and the result!


"Power Supply Stage:


1)  2 x sets of ‘industry-standard’ diodes replaced with 8 x UF4006 ultrafast...

ABS Expandable Sleeving Cable Comparison


Hey everyone,

We recently got in some ABS Expandable Sleeving that can be used to wrap the outside of your cables to help with ground and electrical interference problems. This can be especially useful for longer cable lengths, or for audio cables that are running in close proximity to power cables/sources. Use...

6L6 Valve/Tube Comparison


Hi Guys

How valves sound is a question we are often asked here at HFC. We thought we would start the ball rolling with the 6L6s tube comparison session. Let me introduce our new recruit - Elliot Leech. Recently graduated from the Liverpool Institute of Performing Arts, Elliot is a talented individual, having already worked as a producer/session player/audio engineer with...

Meridian 201 upgraded with Charcroft Z-foil resistors and Audio Note Kaisei caps.

Recently replaced components in the output stage of a modified Meridian 201 preamplifier have been given time to “bed in”, although from the onset it was clear that there was a noticeable improvement in sound quality. The resistors replaced Vishay bulk foils and the capacitors replaced Rubycons.

Examples of tracks which were used at random for listening tests, as I know them all well;...

Neotech NES-3003 MKII

Everyone is familiar with screened interconnect cables;

The screen is soldered to the earth at the source end (pre-amp), and attached to the earth of the plug, with the signal wire soldered to the signal pin. At the target end (power-amp) the screen is cut short (and either soldered over or use heat-shrink to make sure there are no stray wires) and the signal soldered to the signal pin...

How to measure C-Coils - Set-up

This is a brief guide on measuing C-Coils from Jantzen, as they cannot be measured as simply as other inductor types. 

"As mentioned in our website, you cannot measure C-Coils, like you would measure normal induction coils.

First of all you need a professional LCR meter or CLIO, measuring at 1 volt 1 kHz.

Secondly you cannot measure the coil on its own, because even with a...

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