EQUIPMENT HISTORY:
Everything I am describing below is IMPORTANT, read it please!
This amplifier is part of my “collection” of all things audio, both professional and consumer gear. I personally don’t mind a decent NAD piece of gear and actually had a number of these 7150 series receivers, this particular unit was a “to be looked at” as it was NOT WORKING CORRECTLY – see the FULL details below.
Like many NAD amplifiers, these 7155 receivers surprise many. They use a design which results in an amplifier that easily produces far greater audio output than the listener could be expecting.
But the 7155 is not just an audio amplifier but has a very competent tuner and a widely acclaimed Phono system for your turntable, which user loading and capacitance settings and it will handle Moving Magnet (most common cartridges) AND Moving Coil.
I have over the years collected together a LOT of quality audio equipment due to my business activities in pro audio post production and general electronics but the day has finally arrived!

My wife says “for goodness sake, get rid of that mountain of gear” so them’s my orders … out they all go.

This equipment does have a couple of issues, and it is extremely important that the complete description is read in full.

THE CONDITION OF THIS EQUIPMENT IS CLEARLY STATED BELOW, BOTH COSMETICALLY AND ELECTRICALLY
There is no warranty, there are no returns – but I am very thorough and do not “gloss over” any issues I might discover!

I love details, lots of them, but it has been suggested I summarise the equipment condition FIRST and then go into the details later …. so…

NAD 7155 SUMMARY:
Overall, electronically the 7155 Receiver is in really good condition.
Power Amplifier is great
Preamplifier is great albiet with a noisy Volume/Balance concentric control
Tuner PCB has a problem on FM only – no tuning! Great display but the Tuner is not changing frequencies
I can easily ship this equipment anywhere around Australia (INCLUDED in the asking price)

NAD Stereo Receiver
Model: 7155 (B1 Australia)
Made in Japan
Released 1984 ~ 1985
Serial #209490
Dimensions: 435mm x 106mm height x 390mm
Weight (unpacked): 9Kg (packed in a box) 11Kg
Fitted with a standard Australian GPO plug (2 pin NO earth) – I have checked the AC input lead and this does indeed appear to be a non-power earthed system as the lead, wiring and solder joints to the front switch are original and have not been tampered with.

BASIC SPECIFICATIONS:
These manufacturer specifications have been obtained from the Service Manual. I found some of the information online to be confusing, with many different figures thrown into the air by some users.
Power output 55W RMS per channel into 8 Ohms
Now this can be very deceiving when it comes to NAD equipment! These amplifiers have very high dynamic-headroom ratings and are able to drive very low load impedances (such as 2 ohms) at surprisingly high power levels without clipping or other distortion.
The “real life” clipping-output ratings (across the audio spectrum 20Hz ~ 20Khz) are:
65 watts into 8 ohms continuous
These are all your industry standard RMS ratings but if you look at the dynamic power ratings, they are:
100 Watts into an 8 or 4 Ohm load
130 watts into a 2 Ohm load
In real life this means that if your music has a wide dynamic range and at times a heavy demand is placed on the audio output section to delivery much greater power, the 7155 easily takes it in it’s stride without falling into a horrible distorted mess.
But wait! there’s more …
This 7155 has bridging capabilities (switch on the rear panel which allows you to create a HIGH OUTPUT MONO amplifier)
When bridged you can expect 125 Watts RMS OR 250W Dynamic power into a standard 8 Ohm load.
OFF, A or B or A+B speaker switching at the front panel
Speaker outputs are all screw down type and will NOT wo