Affordable, Quality Audio Repairs & Restorations

Phone: 519-513-1084

Email: repairs@dnaelectronics.ca

Address: 15 Shaftsbury Dr. Kitchener, ON, Canada

Quality, Reliable Restorations by Experienced Father & Son Technicians. We Take Pride in our Workmanship.

Receivers | Power Amplifiers | Integrated Amplifiers | Preamplifiers | Tuners

D 'n A Topics & Resources

Restoration Information

General information about our restoration work, and pricing information for various models.

Audio Specifications Database

We are compiling a database of audio equipment specifications gleaned from our annual equipment directory magazines, owner's manuals, service manuals, etc.

Audio Picture Gallery

Pictures of some of the equipment we've worked on, with occasional commentary.

Our Testing Procedures

We test the audio components we restore to ensure they perform at least as well as expected. This is both an overview of our measuring procedures, and an attempt to make clear exactly what is being measured.

FAQ

Answers to some frequently asked questions.

SAE A502 Gallery

Some pictures of an SAE A502 power amp. You can view it's specs here.

If you have an SAE A502 amplifier that is in need of repair, call us at (519)513-1084, or email your enquiry to repairs@dnaelectronics.ca.

For more information about SAE products and the history of SAE, I recommend the following websites:

The links will open in a new window.

The SAE A502 is chock-full of the capacitors you see here on the standby power supply board; we are not fond of them.

More nasty caps in the amplifier circuitry.

The plastic buttons on the front face of the A502 are glued in place. They can- and sometimes do- come loose. Re-glueing them is not a straight-forward job, due to the way the LED power level meters are mounted.

We are not fond of this sort of speaker binding post. If I owned one of these amps, replacing these binding posts would be high on my list of priorities.

Sponsored Link

Especially in the mid 1970's, SAE (Scientific Audio Electronics) manufactured superb audio components- power amplifiers in particular- that still resonate with audiophiles today.

The SAE A502 has 8 output transistors per channel (Sanken 2SA1494 / 2SC3858), so the output stage is quite robust. There are some things I don't really like about the A502; the speaker terminals and the wood panelling that can be screwed to the sides of the amp are cheap! Electrically, though, the A502 has potential.

D 'n A Electronics is a Father & Son business located in Kitchener, Ontario, Canada. We specialize in restoring hi-fidelity audio power amplifiers, integrated amplifiers, preamplifiers, receivers, and tuners. We've been repairing vintage audio equipment since long before it was considered vintage! It is our goal, and pleasure, to reliably restore hi-fi audio equipment to original operating condition (or better!). We accept shipments from across Canada, and many customers from Kitchener, Waterloo, Cambridge, Guelph, Hamilton, London, Toronto and surrounding areas find us to be within convenient driving distance. Thank-you for visiting our website, we look forward to serving you!