Best Audio Chip For.......

rekent said:

Do you have a suggestion for a chip that provides essentially the same function that will work with 15V supply that does not have as high a danger to hearing and equipment?

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Headphones jacks on amplifiers feed each ear through 220 ohm resistors to limit the power. The headphones have small lightweight moving parts so they don't need damping from a very low impedance from the direct output of an amplifier like speakers need.

audioguru said:

Headphones jacks on amplifiers feed each ear through 220 ohm resistors to limit the power. The headphones have small lightweight moving parts so they don't need damping from a very low impedance from the direct output of an amplifier like speakers need.

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Ok, let me try to explain this better: I have an audio signal coming in and I want to pass it right back out at the same volume, as well as send it to front panel mounted headphone jack that has a volume control.

What would be your suggested approach if these amps are a little overkill?

OK, I don't know what the hell I was thinking. I must have been delirious. The battery voltage went low and that's why I didn't have noise. I got plenty of drive when I changed the batteries. I need about a 100K pot somewhere for this thing to work right. If I back down the gain I loose info. I probably should have buffered the LO. Hard to make AGC stick with battery power dropping. Guess I would need to regulate it. So the 386 is probably OK but needs better acoustic box.