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80Hz is the de facto industry standard for that function and IMO right on target for the vast majority of use cases -- again IMO, 60Hz is pretty dang down there. When I was setting up my sub with main L+R speakers that were quite solid down to 50Hz, the tech support folks from both manufacturers recommend 80Hz anyway because that minimizes low-end distortion -- they were right, because it made the bass sound much better than running the L+R pair directly without high-pass and low-passing the sub at 50 or 60Hz....what?
Anyway, looks very interesting. Very nice feature set!
Do I spot 60Hz as lowest setting on the HPF? Seems a little high for my taste.
If they offer it with 48V 10A PSU for, let's say 250 and get everything right just as it looks like, this will be a killer offer.
So, the 80hz recommendation is right because you found it's much better than no highpass at all?
But yes, I get what you're saying. It's just that a lot of bigger speakers sound beautiful between 40 and 60 Hz, and as long as they're within comfortable power handling range (very often), why not use that and have the sub only do 40 and below? My old subwoofer (1999) has a fixed 50Hz highpass passthrough for example, which fit perfectly to their fitting bigger bookshelf speakers.
Use cases and preferences differ. It's always nice to have options. A highpass can also simply be used as a speaker protector without a sub, just like the oldschool "rumble filters".
Imho, because of room modes and speakers placement, subwoofer integration always give impredictable results and require measurements to check how the responses of the L+R pair and sub(s) actually sum at a given listenning position.
OP
Guddu
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Seems more like it.
But I would wait to see internals and most probably some good hands on along with comparison with some good ones. Now these Tpa3255 amps have piled up in my listening space and anything new making me excited to try making my space even smaller.
Dave TR3A
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I may be in the minority with this opinion, but it seems to me that the new A20 isn't a great advance on the A07 Premium. That surprised me given that the A20 is more than 2x the price of the A07 Premium.
From the specs I've seen:
The HPF on the A20 seems to have addressed some of deficiencies of the A70, but I'd like for it to offer a wider range (e.g., below 60 Hz).
I'd really like to see an A20-like mono power amp (i.e., without any subwoofer capability). However, it would need to have better specs --- and better pricing --- to be really attractive.
From the specs I've seen:
- THD+N is 0.002% for A20 versus 0.007% for A07 Premium
- 20- 20kHZ +/- 0.4 dB (A20) versus +/- 1 dB (A07 Premium)
- dynamic range is >= 110 dB for both
- SNR is >= 116 dB for A20 versus >=110 dB for A07 Premium
The HPF on the A20 seems to have addressed some of deficiencies of the A70, but I'd like for it to offer a wider range (e.g., below 60 Hz).
I'd really like to see an A20-like mono power amp (i.e., without any subwoofer capability). However, it would need to have better specs --- and better pricing --- to be really attractive.
Can't you stack them in one tower? Even with a standard ceiling you can fit dozens onto the footprint of one.
Did I miss something or are Watts of power no longer a thing about amplifiers?
When I see 'Output' as a heading on a spec sheet I expect a number ending in W to follow, not so much "Speaker Output, Active Subwoofer Output"
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Nah, the just inadvertently left it out. Very sloppy, but no worse than just cribbing from the TI data sheet like so many TPA3255 amp vendor -- including Aiyima -- have tended to do for years.
JSmith
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Holy shit lol.
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That "CD player" looks more like a turntable, which the amp does not support -- I'm just sayin, it's an (IMO inadvertently) confusing presentation...
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Hi there, thank you so much for your feedback!Looks very promising, even if the rear panel photo labels the XLR and RCA jacks as outputs.
We’ve noticed some small errors in the product description and are working to fix them quickly to ensure all information is correct.
We apologize for any inconvenience and really appreciate your understanding and support!
Newman
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And the power rating is.....?
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Please -- the actual available power given the PSU provided and the usual nominal load impedances of 4 and 8 ohms.
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Don't get me wrong -- it does appear to be a very attractive product. BTW, I own four old A07s that have met my particular needs splendidly for several years, despite the fact that their published specifications were, shall we say, exaggerated -- and plainly copied directly from the TI data sheet.
@AIYIMA Does the high-pass filter act also as a low-pass filter for the sub out at the same time?
(so if I set the HPF to 80Hz, would the sub out have an LPF at 80Hz too?)
Otherwise one would need an additional low-pass filter and that would kind of kill the whole benefit of having a high-pass on the amp....
(so if I set the HPF to 80Hz, would the sub out have an LPF at 80Hz too?)
Otherwise one would need an additional low-pass filter and that would kind of kill the whole benefit of having a high-pass on the amp....
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