Audiosource AMP300.. good?

I have had (and currently have) both Audiosource amps and preamps and if you can get a good deal on them, go for it. They are neutral sounding pieces of equipment that aren't overly inspiring, but strong performers for the price. Also, that amp has enough power to drive those, so that won't be a problem. They are a great combo that I used for a while until I built my own equipment.

PS. I have a Pre One for sale that I could beat your price on...

PM returned

I have two of these, and an amp200. My first 4 ohm speakers were the Lsi9's and my receiver just did not open them up. I then got the first amp300 to help but wanted to conserve my money for an LsiC and eventually the Lsi25's. the amp300 worked like a charm on the 9's and I bought another one after the purchase of the 25's and the amp200 for the center to get better dialog - it worked great.

currently - in the living room - for a stereo set up - I am using the two amp300's in bridged mode to power a single Lsi25 each. I am using a Yamaharxv661 in biamp mode / splitting the right and left chanels from the receiver so that two L imputs go into the L amp300 and two R imputs go into the R amp 300. the surround back chanels also output the front chanels in biamp mode - which i use to run R and L RCA lines into the line ins of the active/woofer part of the Lsi25.

I know that there are better amps out there and I will eventually check them all out (kids want a new boat right now), but for records and SACD listening, this set up sounds out of this world to my ears - which have been at this for about 2 years now.:D

in a surround set up in another room - the amp200 is also in bridged mode, and running an LsiC. the volume setting on the amp200 has to be set to half way or it will drive the LsiC much harder than the amps powering the mains and the surrounds. I am using a Niles2125 to run the 9's in this room and a yamaharxv863 to drive some Lsi7's for surrounds.

Not to mention they do very well as monoblocks. There's no shortage of power in the transformer and the output stages are rock solid.

I've been using 2 Audiosource Amp Three's (predecessor to the 300) mono-bridged for my LS90's for a few years now.

They were a major improvement over a Pioneer Elite 45TX – so much more dynamic. I've toyed with replacing them several times, but I just really do not have any complaints with their performance, other than needing to lift the ground to eliminate some hum.

The other feature I find indispensable (and rare on amps in general) is the independent A/B speaker switching, which is operational even when running mono-bridged. I select "A" on each amp for the LS90's, and "B" to run speakers to remote rooms/locations through a Niles speaker selector. I don't run "A" and "B" simultaneously though, as that would likely put too much stress on the amps.

I have a pair of AmpOne A's and there is no hum for me. I've had them on top of speakers, on wooden floors, sideways, you name it.

Even the noise is excellent. I never tried with muting plugs, but the hiss is only audible to me if my ear is less than 2" from the tweeter, with no source attached. My speakers are also 92dB/W/m.

My only complaint is that they have different idle currents. With them side by side, no source attached, one stays warmer than the other. Had them hooked up as monoblocks and switching sides followed the amp. So now I have one that I prefer over the other; the warmer one.

Conradicles wrote: »

Please explain the ground hum.
Seems I did notice a very, very small amount of hum with the volume all the way down.

Does using an aftermarket high end power cord help with this?

adam2434 wrote: »

Possibly, maybe...

However, the 1st thing I would try is a cheater plug to lift the ground.

The other thing you could try is to reduce the input level control on the amp a bit.

Thanks a bunch. I'll give that a try.:)