Join Date: Jun 2001
Location: Coral Springs,FL, USA
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Not to take this sideways, but I have a Sunfire TGA 5400.
I used to use the amps built into receivers with no problem to drive my JBL's.
When I moved to Martin Logan panels, I started using a separate amp to power my speakers.
First was a Sherbourn 7/2100. It was rated at 200/300 wpc at 8/4 ohm's to drive my system and I was happy with it for years. Then I started to read about amps that double down in power when the ohm's drop. I also heard/read that Sunfire plays well with ML's.
So I found a used TGA5400 400/800 wpc and put it into the system and my ML Vista's really came to life. I felt it was a much better sounding solution than my Sherbourn (which I promptly sold). I was extremely happy and sure that the extra power was the difference.
Years later, I upgraded my ML Vistas to ML Montis and went with a pre-pro instead of a receiver. The Sunfire sounded excellent, never got too hot and made my Montis speakers really sing. I was still extremely happy with the sound of my setup.
Now I am currently going through some new upgrades (processor/surrounds/center) and my dealer suggested I try a good two channel amp for my Montis. He suggested a Moon Simaudio 330A. It is rated 125/250 wpc. I was really concerned about the drop in power as compared to the Sunfire so to say I was skeptical about this would be an understatement. We are talking about a huge drop in rated wpc.
I get the Moon home this past Friday. I immediately noticed how much louder and more authoritative the Montis were with the Moon as compared to the Sunfire. I am still not sure how or why this is (this will take more reading). It was especially noticeable when running the Audyssey setup for the first time. The test tones coming from the Moon were almost double in volume as compared to the Sunfire. I mean, it is day and night.
I really love my Sunfire and still think it is a great amp, but it does not compare to the Moon amp and the Moon has less than 1/2 the power of the Sunfire.
Needless to say, I am now considering a more powerful stereo Moon amp or even Moon mono blocks to drive my mains as I want more of this Moon type of power/sound.
I will keep the Sunfire for the time being to drive everything else. I still love it and think it is a wonderful amp. I definitely prefer it to the Sherbourn. It still plays loud and clear, just not as loud and clear as this Moon amp which on paper is less than 1/2 the power of the Sunfire.
(Theater)Speakers: Martin Logan Montis, Stage X, Dual Depth I Subs, Vanquish in ceiling (surrounds) | Processor: Marantz AV8802(A) | Amp: Three Moon Simaudio 400m monoblocks,One Moon Simaudio 330a, PS Audio Directstream | Sources: DirecTV HR54, HTPC, Mac Mini, Oppo UDP-203, PS4 Pro, Xbox One S | Television: LG 77G6P | Remote: Logitech Harmony Elite
(Bedroom)ORB Audio Mod 2 5.1, Yamaha RX-A2050, LG 55E6P, Samsung K8500, Harmony Elite.