Even though this is old generation NAD equipment, the 4225 tuner is a good piece of NAD gear that does it's just with no "frills"
In keeping with the usual NAD design, this tuner has very simple layout and operation.
This tuner has been refurbished, checked and for the last month or so it has been in my office having a test "burn it" because prior to this advertisement it has been sitting in our storage units for a long long time. This equipment was from our previous audio post production facilities, used for dedicated station "off air" monitoring and never gave us an issue.
This tuner is retro as they come!
Display is RED led type - not the blue/green commonly used by NAD
Basic tuner functions only
NAD AM/FM Tuner
Model: 4225
Made in Taiwan
1988 release
Classic NAD Charcoal Grey/Black finish
Rear antenna connector strip:
AM: Provision for an external antenna to be connected
FM: Provision for direct connection of a dipole or similar antenna
Clear, easy to read RED status display
FM stereo indicator
NO signal strength meter
Mono switch - forces the audio into mono channel mode
Blend - allows a stereo effect with weaker signals
SUPPLIED WITH:
AC power lead
User manual - these are dead easy to "drive" even the dual bank, 14 memory system makes sense! (unlike other manufacturers gear)
Service manual - could be useful "one day"
Both of these manuals would be supplied on a CD, pdf format
COSMETIC CONDITION:
Very clean all round
Light (black) mark to the front panel, just above the MONO button
Superficial light scratching/marking to the top of the case from rack shelf insertion/removal - these marks are NOT serious
Side panels and the rear are in very good - excellent condition
Absolutely no dents or dings!
All labelling is un-damaged
All knobs/buttons are clean and without marks or damage.
Red led display is clear, bright and sharp
Australian standard line lead fitted
TESTING:
HISTORY: another piece of our ex studio equipment (actually used for off-air monitoring)
This is the Australian model, unmodified (240V AC input, non-removeable lead with moulded 2 pin plug)
Powered up, display comes to life
Display is fine, not marked or scratched
Buttons all work as they should, including the memory system
Memory storage is working fine
Tuning indicator is functioning fine - this indicates if you are tuned a little low or high or "spot on"
Search function works without any issues, easily finds stations and stops until instructed by the user to either continue searching or stay put. I like the feature where it reaches the band limits (AM or FM) and doesn't just loop around and start all over again.
AM and FM frequencies used during my "burn in" testing - no issues with either frequency range
Saved stations into the preset system, working fine which means the super-cap is still functioning fine - these tuners do not use a Lithium or other type of battery backup but instead have a small but very large capacity "super" capacitor which "stores" a supply voltage for the memory of the equipment.
Audio quality is "acceptable/average" for general listening but in my opinion not as good quality as the 4155 I also have on offer
If you would like to see what a 3rd person thought of this model, a semi professional evaluation is available here: https://www.yaegeraudio.com/reviews/nad-4225/
My overall impression of the NAD 4225 compared to the 4155 (earlier model tuner) is that the 4225 is made using lower production costs, less focus on the design features and evidence of this is the manufacture was not in Japan, the features are basic and the technical design is not as "elaborate" - it does its job, nothing more and nothing less.
Almost all of the case construction uses pressed steel, this is one very solid unit (and subsequently, heavy)
