Price Paid:  $0.00

Summary:
This amp is for those who want the best sounding multi channel amplifier and one of the best musical sounding amps as well. Clean sound, tight extended bass, powerful enough to move almost any speaker without a problem. Not much to say, this is one of the best sounding multi channel amplifier period. If you mostly listen to music but want something that does movies as well then this is a great choice. Built like a tank.

Price Paid:  $3000.00 from Brett Interior

Summary:
Associated Components: Speakers: Center: Martin Logan Cinema, Front (left/right): Martin Logan Ascent, Surround Rear: Martin Logan Scenario Subwoofer: Infinity HPS-1000 (1000 watts) Speaker wire: Audioquest GR 8 Interconnects: Nordost Blue Heaven Processor: Rotel RSP 1066 CD player: NAD 541i DVD/CD players: Pioneer Elite DV-c36 and Sony NC 650V SACD/DVD/CD Player. Power Conditioner: Monster Cable HTS-1000. I am blessed with a good career but I am not wealthy so I really had to select well on this purchase. I am in search for an amplifier that conveys music and movies accurately. In my quest, I auditioned Sherbourn 5/5210, Classe’ CAV-180, Krell (entry level), Outlaw 755, Rotel RMB-1095, and Pass Labs X5. The Sherbourn 5/5210 was powerful and dynamic enough for home theater applications but under performed with music. It sounded as if it was struggling to drive the Martin Logans. Martin Logans are definitely not ideal for the Sherbourn 5/5210. The Krell sounded great but it was a bit expensive for what you get. The Outlaw 755 is a good amplifier that could drive the Martin Logans. It sounded open but had an edge in the upper frequency. It was entertaining and a good choice but I was still not satisfied. The Classe’ CAV-180 was an outstanding choice. It reminded me of a very high-end amplifier. It is a relative bargain for $4000 but I was not willing to gamble on lack of dealership support in Arizona. The local dealer here had Rotel RMB-1095. This is a highly regarded amplifier as well. It was recommended in Stereophile and other periodicals. My impression was that it was smooth sounding and dynamics were respectable too. The bass was its shortcoming. It could not produce music with complex bass. I wanted to like the Rotel so much because it was affordable but it just did not address my needs. The Pass Labs X-5 is also a great candidate. This amplifier is popular choice but lacked the power I needed. Finally, I auditioned the ATI-2007. This was highly recommended by Art Brett of Brett Interiors (520-733-9896), a hi-fi dealer here in Tucson, Arizona. I must admit I did not really know ATI, but I decided to give it a try since the dealer seemed trustworthy and knowledgeable. To my surprise, this amplifier sounded great out of the box. It did not have the edge of the Outlaw and sounded smooth also like the Rotel. It sounded like the Classe’s CAV-180 but it was just $1000 cheaper in a 7-channel version. The Classe’ was very good indeed but it was hard to justify $4000 investment where you can buy the ATI-2007 for $3000 with more power and more channels. This amplifier is a profound bargain for $3000. Its dynamics, bass reproduction and mid-range frequency were impressive for the money. Voices sounded natural and instruments are well-spaced. The sound is big and effortless. I loved it the moment I connected it and I continue to appreciate its talents each passing day.

Strengths:
big open sound stage, detail, great value, smooth

Weaknesses:
none at this price

Similar Products Used:
Krell, Outlaw, Sherbourns, Rotel, Classe, Pass Audio

Price Paid:  $1500.00 from Audio Dimensions

Summary:
Scary power, the best placement of sounds (imaging) I've heard, beautiful midrange and powerful bass. I'm sure this amp is impossible to beat for home theater and difficult to beat for music. It's weight at 106 lbs. is monstrous but makes you feel that this amp is indestructable, which it probably is. I love the auto on feature which integrates with my Lexicon processor perfectly. It drives ribbon and planar-magnetic speakers which sound better than before. It completed my home theater. I use an Oddessey (150 wpc) amp for the two rear speakers (7.1 system.) This set up with a Sunfire Signature sub simply makes the room rumble and shake yet, any slight sound is heard with clarity and precisely placed where it should be. Mine was an opened box last of it's kind special but, even at $2,000 or more, it's a deal.

Strengths:
powerto deliver bass and clarity and imaging.

Weaknesses:
weight, requires it's own 20 amp circuit, and won't accept spade lugs.

Similar Products Used:
Oddessey, Audio Research, Yamaha, AMC, etc.

Price Paid:  $0.00

Summary:
Need help just got my ATI 2505 and having problems with HUM. Ran a 20 amp circuit to power amp and other components using a Denon AVR-5800 as preamp #1 problem HUM In all speakers #2 problem after diconecting all the inputs have a loud HUM in the left channel only ruled out speaker by testing with another speaker useing Monster Cable Interlink 400 Mk II please help.

Price Paid:  $2400.00 from onecall.com

Summary:
I was very skeptical about going to a separate power amp. Thanks to the reviews of others here, I took the chance and I must say that it was a great move on my part. My excellent Pioneer VSX-27TX Receiver is now a preamp/processor. Although it pumped out clean power to all channels, it was no comparison to the ATI-2505. I am getting bass response out my Polk RT 800's like never before and believe me, those speakers love power! Like others, I am listening to my music and movie collection all over again, hearing things I've never heard before, with crystal clarity and presence. Sure, I would be naive to think that other power amps wouldn't do the same but this baby cranks with absolutely no effort. Take a chance on the low price and the generous wattage you get, great build quality and a manufacturer that stands behind their workmanship, 7 years worth, along with modular replacement capability. This amp will satisfy my need for power for a very long time! Thank you, ATI!!!

Strengths:
Solid Build. Incredible power reserve. Great soundstage.

Weaknesses:
none that can be found.

Similar Products Used:
none. (first timer!)