I recently modified a Musical Fidelity X-CAN V3 headphone amplifier. My goal was to see what sort of improvements I could make without spending too much cash. The Musical Fidelity X-CAN V3 uses bipolar output devices, with a tube driver stage. The tube driver stage is a JAN (Joint Army/Navy) 6922 mil-spec dual-triode tube, per […]
Musical Fidelity X-CAN V3 Headphone Amplifier Upgrades Read More »
After successfully building my LM3886-based gainclone project amplifier, I’ve decided to build a version better suited to driving low-impedance loads. This leads me to the LM4780 chip from TI, which is just two LM3886 dies in one package. It can be used as a stereo amp, or a bridged or paralleled mono amplifier. The datasheet
One of my recent jobs was inspecting and servicing a lovely example of a Krell KSA-150 Class A Power Amplifier. You may have already watched my restoration video, where I completely refurbish one of these beasts. This video has actually generated a great deal of interest and I receive lots of queries in relation to
This video documents my comprehensive overhaul and restoration of a gorgeous Krell KSA-150 class-A power amplifier. This wonderful KSA-150 developed a serious fault at some point in the past. This had been quickly fixed and was sold to me in very poorly repaired condition. Because of this, I decided to completely overhaul the amplifier and
Redgum is an Australian brand I wanted to be able to write great things about when I repaired and serviced this Redgum RGi120 integrated amplifier. Being completely independent and running a website entirely without advertising means I always say exactly what I think. I’m not swayed by anyone else, I don’t owe anyone any favours
The Redgum RGi120 Integrated Amplifier – Australian Quality..? Read More »
The Sansui corrosive glue problem affects many vintage amplifiers and other equipment. Resolving the issues caused by this glue can be time-consuming. You may be familiar with the scenario: over time, your favourite Sansui (or other) amplifier starts to develop faults. Maybe it won’t come out of protection, or maybe a channel becomes intermittent. These
I recently restored a gorgeous Sansui AU-717 integrated amplifier in need of some serious TLC. Let’s take a look at what goes into a typical restoration and discuss these classic amplifiers. The Sansui AU-717 integrated amplifier is one of those pieces that I just love working on. Sansui designed and built the AU-717 at a
I was recently asked by a customer to service and repair two of his gorgeous Kenwood L-1000 series components. In the lab this time were an L-1000T tuner and matching L-1000D compact disc player. All I can is wow! This gear is seriously well put-together and just beautifully engineered. In what was a great result,
Kenwood L-1000 Series – Exceptional Audio Components Read More »
A couple of years back I performed a comprehensive tear-down, overhaul and upgrade of my gorgeous Krell KSA-150 power amplifier. I made a video of it, which you are most welcome to check out: UPDATE: It’s received over 100,000 views as of January 2022! There’s not much you can buy that can touch the performance of
Krell KSA-150 Class-A Power Amplifier Restoration Read More »
