Does the guy doing the review know anything about good sound? I know that YouTube is not hi-res audio, but that is about the worst YourTube audio quality I have ever heard.
Unfortunately all of his videos are that way.
Amir please do a review of the Emotiva BasX a-100 I would love to see how it is as a headphone amplifier and the old school engineering of it seems sexy as hell.
Although I am quite curious about how it would test, now that I've ordered one I'd rather be ignorant and happy
Amir please do a review of the Emotiva BasX a-100 I would love to see how it is as a headphone amplifier and the old school engineering of it seems sexy as hell.
The emotion should come from quality and nature of the recording, not the electronics.i absolutely love this website. I wonder how much weight is given to the subjective experience? I am one that leans to the measurements, but I do wonder when I should just enjoy the sound for what it emotionally offers
I think it was not wise to use a single opamp for this much gain, even if it is an LT1115 where the data sheet shows a 40/60 dB switchable phono preamp. I would expect lower THD with two opamps sharing the gain load.
It uses the LT1125 quad opamp in a 16 pin package, not the LT1115 which only comes in an eight pin package.Here's a shot of the interior:
View attachment 26320
It appears to implement the Linear Technology LT-1115 ultra low noise opamps. Clearly it also is running a couple of buck style converters to take the DC input and generate the +/- rails.
Datasheet link (with RIAA preamplifier application note design):
https://www.analog.com/media/en/technical-documentation/data-sheets/lt1115fa.pdf
It is NOT a single opamp.I think it was not wise to use a single opamp for this much gain, even if it is an LT1115 where the data sheet shows a 40/60 dB switchable phono preamp. I would expect lower THD with two opamps sharing the gain load.
It uses the LT1125 quad opamp in a 16 pin package, not the LT1115 which only comes in an eight pin package.
The LT1115 is quieter than a single 25 opamp, but I suspect that they are paralleling up the LT1125 devices.
It is NOT a single opamp.
There are four opamps available per channel.
WhoopsOh, OK. Right. You'd better tell Emotiva the LT-1115 they used and pictured doesn't exist.
View attachment 34395
Oh, and tell LT the package they specify in their datasheet (and the one pictured on the Emotiva board) they actually don't manufacture. You know, the one with one (1) opamp inside it and a whole lot of NC pins...
View attachment 34396
Maybe also tell Mouser the 136 they have in stock don't actually exist.
View attachment 34397
I'd love to have someone measure it properly...
As I implied, the FFT bin widths are probably not identical to his. I'm using 128k bins with a 192K sample rate and a rectangular window.Maybe send it to @SIY?
Very impressive low level performance at 0.25mV. I don't think I've seen anything quite like that.