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New Blog articles

03-Sep-2010

One about monoblocking two 520f's and a post about measuring distortion with software..

Webshop checkout problem

14-Aug-2010

There has been a software-problem with the checkout procedure in our Webshop the last week. After pl..

Improving the 909

08-Aug-2010

There is a new illustrated article on the Blog (http://quadrevisionspot.blogspot.com/) about improvi..

Edited article Pro & Cons power suply design from december 2008

03-Jun-2010

The article about the design of the power suply of a 606 is edited, at last the useful comments of P..

CUSTOMERS

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Quad 303 Upgrade and Revision kit

€74.00
In stock: 9

Everything you need to do a full revision of your 303 yourself!

Illustrated step-by-step instructions & schematics online.

7/7 help via e-mail

Audiograde high-end caps for the circuit-boards

Audio-grade resistances for the power-supply

Top-quality Nichicon 4700MF 100 Volt capacitors for the outputs & the power-supply

The kit is adapted to the serial-number of your 303. Some components changed over time... Mention the S/N in your order and you will get an adapted kit

The kit includes several other components like diodes, trimmers and cabling

You can download the 303 Upgrade / Revision manual from the Download section.