This product is difficult to classify: it isn't an amp, although it will drive speakers by increasing signal strength, it's not a preamp, but it does have some digital switching as well as a volume control (that can NEVER clip!!), and it's not a D/A convertor because it never leaves the digital domain! High Point Mobile Auto Repair

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May I see the photo for reference? soundproof plastering

Don't have this.

As a former musician I hear what I think is quite natural sound.- Spark Plugs and Ignition Coil repair

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After I completely hooked up the Adcom GFA-5500 that way like my Adcom GFA-555's are the 5500 sounded a lot smoother and much more toned down with much more clearity. It was still just a shade and I mean a shade different in complete clearity and warmth than the GFA-555's sound. The GFA-5500 is still a great amp and you wouldn't notice the difference like I would since I'm used to listening to the 555. tow truck service

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The Hafler, Philips and Thiel are old but the music sounds true. As a former musician I hear what I think is quite natural sound. The Thiels I have read are quite revealing of anything "upstream". I believe it! towing service

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I really want it!!!

The 9180 is a good product to start with - I did. However, it is not up to par with High end amps. My mid fi McCormack absolutely puts any Hafler amp to shame - Better bass, mids and highs with pinpoint imaging.

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I acquired my Hafler 9180 from a friend who was moving. He said it didn’t work and if I can get it repaired, it’s mine. I found a guy who could make the amp work and have been enjoying it for over five years. Once it warms up the sound is rich and lively. I use an Adcom preamplifier and run the system to a set of klipsch infinity floor speakers. There are tracks that blow my mind. I struggle with the idea that there might be an amp bette than this one. It would have to be damn good.

Like some have mentioned, the right channel can get wonky. I happen to think the issue lies primarily with my preamp since it has no DAC. I’m working on improving the device. The amp, though, is wonderful other then the occasional channel fade out.

I agree with all other compliments about the Hafler 9180. Owned mine since I think 1993 or '94? Purchased it through a close out sale for a mere $400!! At the time I knew this was a really good price for this amp. I was a bit surprised no one wanted it.

An audio designer/engineer from Sellwood Oregon first introduced me to Hafler in 1977. He recommended purchase of a DH-101 pre-amp kit. I did and enjoyed the building process and it's performance. Miss the days of kits!

Back to the 9180. It has functioned without flaw since purchase. However in 2015, I had one small hiccup. One channel kept cutting out. I thought long and hard about having it evaluated and repaired. Then I tried a bit of internal cleaning, in a fantasy that maybe this was the fix. First sprayed off the dust then went around with an alcohol soaked swab cleaning random components. I had no clue about what I was doing or what it might accomplish. Voila! Problem solved! Been fine since.

Yes the Hafler is built well, like a tank others have said. It drives my pair of Thiel CS2 towers. A simple Rotel pre-amp and old Philips CD 80 round out my equipment. The Hafler, Philips and Thiel are old but the music sounds true. As a former musician I hear what I think is quite natural sound. The Thiels I have read are quite revealing of anything "upstream". I believe it!
I would never foresake my MOSFET amp.

Tried a Bryston once. Sound was lean and somewhat un-involving. Sold it some years later.

Sure I have "lusted" after amps with more watts and current. Then after that fantasy dissipates I return to the Hafler. It does what I want very well. The sound is musical and involving, not fatiguing. If I get fatigued at all it is the music source. Time to change the CD!

Anyway glad the audio designer/engineer introduced me to Hafler. It has been 23+ years of musical bliss!

Perfect addition o my frankenstein home theater system. This is a 25 year old amp and still amazing! Beats the pants off all the budget separate amps i've owned like Adcom, Emotiva, Acurus and Parasound. It even goes head to head with the expensive British equipment like Naim and Audiolab.

Only 105 watts but stable into a 1 ohm loads. Few amps in this price range can boast that. The best thing about his amp besides the build quality is that it actually sounds good playing music. I would have preferred the grey one, but those are hard to find. This is the best amp i've heard under $1,000 and I only paid $90 for it used!