Parasound 275V2 Measurements

[orchardaudio]

All,

One of my customers send me this amplifier interested in how it will compare against the Starkrimson Stereo Ultra. Anyway I figured I would also post the measurements here for everybody's benefit.

This amplifier is current selling for $595.00 on amazon

All measurements are with 8ohm load, with the amplifier configured for bridged mode operation.

I will start off with Bench Mode...

SNR A-Weighted

Frequency Response and Phase

-40dB Output at 1kHz wideband FFT

THD+N @ 1kHz vs Measured Level
Even though the amplifier is rated for 200Wpc in bridged mode it does not get there. I tried a few different ways and was not able to get there. There is a very large gap in performance compared to Starkrimson Stereo Ultra.

THD+N Vs Frequency at 10W (20kHz BW)
The 275V2 clearly has a level of frequency dependence as the THD+N goes up with frequency.

IMD SMPTE

Multitone

10W 10kHz square wave 4ohm load (stereo mode)

I have the amplifier only for another day or two if there are any requests I will try to accommodate but no guarantees.

 

[Matias]

Thanks! But could you also post the dashboard and power vs THD+N comparison both in 4 ohms?

 

[orchardaudio]

Thanks! But could you also post the dashboard and power vs THD+N comparison both in 4 ohms?

Please note this amplifier does not support 4ohm loads in bridged operation. So these measurements are done in stereo mode not mono mode.


Bench Mode 4ohm load.

THD Vs power 4ohm load:

 

[orchardaudio]

Added 10W 10kHz square wave to original post.

 

[Vini darko]

The £170 Behringer amp for context

 

[KxDx]

The pricing is odd... the 2125v2 is selling for the same price, and it's double the power.

https://www.amazon.com/Parasound-21...5v2&qid=1628505333&sprefix=parasound+2&sr=8-3

I have a 2250v1 for my main system and a 2125v1 for the living room. I bought both second hand and they've been problem free.

 

[tifune]

Even though the amplifier is rated for 200Wpc in bridged mode it does not get there. I tried a few different ways and was not able to get there.

Really disappointing result re: bridged mode. Do you recall, was this done with the rear switch set to 8ohm?

To Parasound's credit, their published specs match these results quite closely with the exception of bridged power. So, at least they're not overselling the lineup which seems rare these days. on tehe flipside, that makes it all the more puzzling why bridged mode fell so short - why exaggerate 1 use case?

 

[orchardaudio]

Really disappointing result re: bridged mode. Do you recall, was this done with the rear switch set to 8ohm?

To Parasound's credit, their published specs match these results quite closely with the exception of bridged power. So, at least they're not overselling the lineup which seems rare these days. on tehe flipside, that makes it all the more puzzling why bridged mode fell so short - why exaggerate 1 use case?

I tried every which way, I put up the measurement that yielded the best result. Sorry I don't remember what exact setting that was.

 

[tifune]

Please note this amplifier does not support 4ohm loads in bridged operation. So these measurements are done in stereo mode not mono mode.
View attachment 140916

THD Vs power 4ohm load:View attachment 140924

Maybe I'm misunderstanding this portion. I believe the 200W rating is just for 1 channel, but you tested 2 simultaneously and achieved 100W/ea. So, isn't this expected behavior?