I guess people might be confused because a PSU spec alone can't tell you what power an amp will reach in practice, since that may depend on other factors as well (like cooling implementation, gain limiting or protection circuits).
It's completely different. It's a new design.
Details? My understanding is that both use the TPA3255 power chips and OPA1612 op amps with PFFB. Both are 100 watts/ch at 8 ohms. I'm sure there are some differences, but "completely different"?
Mea Culpa, I got the devices mixed up. Manufacturers should consider some sort of naming convention.
The WiiM Amp Ultra uses dual TPA3255 chips whereas the WiiM Vibelink Amp sports a single chip, only.
Thanks. In my case it likely makes little to no difference. Not a ton of two ohm loads out there (and certainly not in my case), and I'm not a head-banger when it comes to volume anyway. Plus my sub is separately powered which is where tons of power is generally needed. And, the extent to which the 2nd chip is needed would also be a function of whether the Amp Ultra's power supply is any beefier than the Vibelink's. I think for the vast majority of users the slight difference in features on the source side and whether one wants one box would have a bigger impact on which to choose.
The output impedance is not only relevant at low frequencies, as we all had to come and accept. I also think that the WiiM Amp Ultra is probably limited by its PSU when it comes to power output into really low loads, so the advantages of using dual chips won't fully pay out.
In most speakers, dips like you describe tend to be limited to a narrow frequency band. It really only becomes an issue if one needs the speaker to play at a loud volume that requires continuous max power from the amp at that one frequency. Most music is dynamic and more than one note sambas. Prior to the Vibelink, I ran my setup with a 20 watt/ch class A amp and had no problem reaching my desired average playback level of 80 dB plus peaks beyond that. I know there are some out there whose setups and desired listening volume need hundreds of watts per channel but mine's not one of those. That's the nice thing about the audio hobby -- plenty of choices out there so everyone can get what they need!
I don't agree.
Hope its the first part of my post that you disagree with and not the last sentence!
Absolutely yes!Hope its the first part of my post that you disagree with and not the last sentence!
In this case I'd say I don't agre with the quoted part, but as you said the important but is that we do have the choice. . Most likely a video will follow. For those who favor looking instead of reading.
