RSL ia255.1 Amplifier Review

[Bob101]

I voted fine given estimated use case of desktop speakers and sub. A pocket wonder for just $125 Aaaaand it has automatic high pass filter for subs. My amp (Audiophonics S400ET) cost about 10x as much.

I've got one of those too, and it is 10 times more powerful with 10 times less distortion. I don't see the reason or logic behind our comparison. Please explain.

 

[escape2]

The amp has a proper high pass filter for the mains. Its frequency is a bit high at 90 Hz.

I believe they chose this value because the speakers they sell (CG3M) have a frequency response of 90-20,000 Hz ± 3dB.

 

[Jimster480]

How can this be recommended when it is broken in multiple ways? You can buy better amps from Fosi for less money that actually work... This just seems like junk they didn't even test themselves.

 

[NotInYourHead]

That JieLi BT chip is possibly the culprit for bad USB performance.
I didn't think for the life of me that such a chip, usually seen on cheap-as-chips Chinese DIY boards, would be in $100+ products.

 

[Joe Smith]

I have a soft spot for RSL as my very first good speakers were two-way RSLs, from their big store on Van Nuys Blvd. in the San Fernando Valley in LA. Very good sound from their house brand which I bought (thanks, parents) in 1974 or thereabouts. Kind of amazing the company is still around after all these years.

But I wouldn't buy this amp, would much rather have an Aiyima or Fosi amp paired with the Fosi P4 preamp, for just a bit more $.

 

[Head_Unit]

Rogersound Labs

Well nice to see them coming into this product category and BLESSINGS for the highpass filter. Hopefully they can improve the "Cleanness" of future models.