Harmon Kardon Jaguar Amplifier Upgrade

Almost any Hi-Fi component can be upgraded to higher performance using our techniques and components. The two things go together – the know-how and the right component. Over the last 30 years, we have developed our knowledge of where the biggest problems lie and how to overcome them to unleash better performance from a given piece of equipment.


An unusual request to upgrade the OEM premium power amplifier from a Jaguar XJ, but that’s the beauty of our service, nothing is off limits!





The customer wanted to keep the in-car entertainment system completely stock but wanted to upgrade to sound quality, so they approached us asking if we’d be interested in putting an upgrade together for the power amplifier.

We approached the upgrade in the same way that we do with m ore traditional hifi components by replacing as many standard parts with our select audio-grade versions.



Before...



After...


44 significant component upgrades/changes are made across the analogue circuitry including inputs and outputs. We used Russ's favoured audio grade Panasonic capacitors which give a smooth and detailed sound. The unit is completely disassembled to gain access to all key areas of upgrade.









Being a car amplifier, there are resonances all over the place, so we added small strips of damping to the tops of the capacitors to reduce any mechanical energy from potentially adding distortion which is of course, not good for sound quality.





If you don't have exactly the same model as listed above, but a very similar unit, then it's highly likely that the same or similar upgrades will apply. But we can't guarantee that until we have the unit here for inspection. Get in touch and let us know what you have.


Equipment upgrades are proving hugely popular. During peak times there may be a wait of several weeks before we can carry out the upgrade. So before we get your equipment here, it must be booked in so we can ensure a speedy turnaround of the upgrade. Once you have placed your order, we will contact you to arrange a suitable week and getting the equipment here.

In Person
For those of you who are local enough or if you fancy a trip to the lakes, you can drop off your equipment personally and then collect it when it’s complete or we can ship it back to you.

By Courier
We can arrange a courier collection of your equipment for an additional cost. We currently use UPS.
To make things easier, we can offer several collection options.

1. We can arrange a specific day for the courier to call and collect your equipment. Someone will need to be available all day at the collection address as we’re unable to arrange a time slot for collections.

2. Dropping off at a UPS Access Point. UPS use a network of local shops to deliver and collect parcels from and to. We can either post you a collection label or email you the label (you will need to print the label at home/work). Securely box up your equipment, affix the collection label to the outside of the box and take it to your preferred Access Point where you will be issued a receipt. UPS Access Points can be found here (link opens in a new window), simply enter your postcode to find your nearest one.

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Please note this is an upgrade modification, it does not include the Jaguar XJ premium power amplifier.