Marantz 7002/8002 Question

[SquidPuppet]

I see this on the spec sheet for these 2 Receivers. Can someone help me to undestand why there is a difference, and what it means in terms of sound quality?

Freq. Response (Analog In) = 8Hz - 100kHz (+/- 3 dB)
Freq. Response (Dig In) = 8Hz - 45kHz (+/- 3 dB)

Thanks All,

[SquidPuppet]

anyone? Help?

[richteer]

Originally Posted by SquidPuppet

I see this on the spec sheet for these 2 Receivers. Can someone help me to undestand why there is a difference, and what it means in terms of sound quality?

Freq. Response (Analog In) = 8Hz - 100kHz (+/- 3 dB)
Freq. Response (Dig In) = 8Hz - 45kHz (+/- 3 dB)

The maximum possible input frequency is about half of the sampling rate (look up Nyquists Theorem for more info), so for a 96 KHz sampling rate, 45 KHz is about the maximum input frequency.

This is why CD is sampled at 44.1 KHz, so that frequencies up to 20 KHz can be accomodated.

[SquidPuppet]

Originally Posted by richteer

The maximum possible input frequency is about half of the sampling rate (look up Nyquists Theorem for more info), so for a 96 KHz sampling rate, 45 KHz is about the maximum input frequency.

This is why CD is sampled at 44.1 KHz, so that frequencies up to 20 KHz can be accomodated.

Thanks.

[Ectoplasm]

I know for a fact that my ears can barely make about above 16Khz, so I just laugh at people (not the OP) who make a big deal about highs being cut down to 45Khz!

How high can you hear?

Try this test:

http://emc2.tistory.com/583