Fans are often added to deal with either cost, aesthetic, and/or space issues. Keep in mind that heat is dissipated by some combination of conduction, convection, and/or radiation (from a "heat transfer" point of view). For example, proper heat sinks designed to dissipate a lot of power/heat can be (a) large and expensive and (b) unatractive to some people. So to address this, a smaller/compact heat sink is used instead (ie. less conduction) and a fan is added (ie. more convection). Fans are generally cheaper than heat sinks. I have several monoblock amps (Threshold SA-1, Kenwood L-07M) - all of which are large and heavy, and have healthy heat sinks and no fans. None of them are pretty, except perhaps in an industrial sense. In any case, you don't have a "lemon" or "bad" amp. It is simply a design choice by the manufacturer. "High-end" in the case of Yamaha might translate as "high power". In order to keep the same aesthetics as other Yamaha products, adding a fan may have been the only way to deal with the extra power. And as others have already pointed out, there are some benefits to having fans, particularly when placing equipment in racks where convection and heat sinks may not work quite as well. And equipment with fans tends to be smaller than their non-fanned counterparts - important when space is critical. WARNING: I want to digress a bit on audio components and systems in general. I believe earlier in this thread a few brands of amplifiers were bandied ("brandied") about as "superlative", but there's more to it than just picking an amplifier... There is no single "superlative" amplifier - there are plenty of them. Remember that an audio component like an amplifier is part of a SYSTEM. For example, if your speakers provide a difficult load or are especially inefficient, you may want a high current, high power solid-state amplifier. But maybe you have very efficient speakers like horns or Lowthers - you might want to consider a lower powered SET (single-ended triode) or other tube amp - you certainly won't need a high power amp in these circumstances (not that a high power amp hurts, it's just the power is not really utilized). Audio equipment is all about compromises and trade-offs in sound, cost, space, aesthetics, even heat. And always remember, it's an audio system - if you spent a fortune buying all "Class A" recommended components and put it all together, there's a strong chance that the system will sound horrible. Even the room acoustics are a big part of the system - sometimes people are trying to fix a sound problem with the equipment, and they should really be trying to fix the room. Also, every person's ear is physically different - a system that may sound too "bright" (too much treble) to you, may sound perfectly smooth to someone else. This may not simply be a matter of preference, it is actually a physical difference where the other person actually hears something differently. I find that in high-end audio, it is not about "better" sound, but instead "different" sound tailored to the ears and preferences of each listener. Of course, there are some combinations of equipment that many agree do sound very good together. Find someone whose ears, taste and judgment seem to match your own, and try to learn from them. As someone suggested earlier, try to break away from the receiver and go with separates. You'll have to do more work matching the system of separates, but in the end you can achieve better sound because you have more control over the pieces in the system. I've had good luck with second-hand equipment - that's certainly a good way to build a cost effective system. Good luck! Eric Jacobs The Audio Archive -----Original Message----- From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]]On Behalf Of Scott Phillips Sent: Wednesday, August 31, 2005 12:25 PM To: [log in to unmask] Subject: Re: [ARSCLIST] fan noise in yamaha rx-v740 Fans on consumer gear are usually pretty quiet. (IMHO !) Fans on pro products can be fairly loud, as the quantity air moved is more important in SOME pro applications.. -----Original Message----- From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of Michael Ridderbusch Sent: Wednesday, August 31, 2005 9:22 AM To: [log in to unmask] Subject: [ARSCLIST] fan noise in yamaha rx-v740 Thank you for the input. I called Yamaha and according to them, the fan is a feature found on their high end amplifiers (so ignore the online product reviews), which makes me wonder, are fans: a) ok (meaning my amp is a lemon), or b) bad, or c) ok on some models?