SNR and Crosstalk

[junk88]

hey brothers I'm new to this, I've been learning some stuff, but what is SNR dB and Crosstalk dB? on an amp?, I'm guessing the lower the crosstalk dB means greater clarity and higher SNR more power?

 

[junk88]

no one knows.?

 

[buke9]

The thing is most amps that you will find this is not something to worry about. If there is one that has crazy numbers then you should ask about it. What is your concerns?

 

[junk88]

The thing is most amps that you will find this is not something to worry about. If there is one that has crazy numbers then you should ask about it. What is your concerns?

Thank you bro, how many amp watts are typically needed to drive 150 ohm?

 

[ProtegeManiac]

hey brothers I'm new to this, I've been learning some stuff, but what is SNR dB and Crosstalk dB? on an amp?, I'm guessing the lower the crosstalk dB means greater clarity and higher SNR more power?

SNR - Signal to Noise Ratio. The higher the dB rating, the higher the output before you get electronic noise from the amp circuit. This only pertains to noise generated by the amp circuit, it doesn't include other possible audible noise in the system upstream of the component. If the soundcard picks up noise from the PSU or the DAC has noise when operating with an Android phone (vs a tablet that isn't running a cellular signal) or there's noise from a dirty, old power line in the building, then not even a Nelson Pass amplifier will clean that up since the circuit only means the amp itself won't add noise until you hit a certain point.

Crosstalk - how much of the signal bleeds across each channel, or more accurately, how strong the signal can get on the analogue stage before it starts bleeding across both channels, so higher the xxdB on this, the better.

Thank you bro, how many amp watts are typically needed to drive 150 ohm?

That depends. A 150ohm, 90dB/1mW headphone will need more power than a 150ohm, 100dB/1mW headphone.

It's like how nearly all home speakers are 8ohms but you can get a Wharfedale at 86dB/1W at 1meter or a Focal at 90dB/1W at 1meter. Headphones just omit that distance measurement since they're all practically just outside your ears (or on your conch if it's an IEM).

A 2,500lb Lotus can have the same drag coefficient and downforce as a 3,800lb Lamborghini but a Toyota V6 will work fine with it without the need for a 6.0L V12 to go from 0-60mph faster (although of course the top speed will be higher on the Lambo, or a Jaguar XJ220 for that matter).