Bushmaster DAC burn-in

Thanks!

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Originally Posted by jandl100

The amp can be turned off, but you do need the cables from the DAC to the amp to be connected. :)

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Could you explain why the cables need plugging in?

Regards

There needs to be a circuit made for burn-in to happen. If you leave the cables unplugged there will be no current flow. The amp's input circuit will form the correct loading for them. It doesn't need to be switched on.

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Originally Posted by MartinT

There needs to be a circuit made for burn-in to happen. If you leave the cables unplugged there will be no current flow. The amp's input circuit will form the correct loading for them. It doesn't need to be switched on.

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I thought that the amp needs to be switched for the signal / current flow to occur (or how can it actually go anywhere).

I suspect that the "burn in" of the DAC has more to do with the PSU side than the signal bit.

Regards

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Originally Posted by chrism

I thought that the amp needs to be switched for the signal / current flow to occur (or how can it actually go anywhere).

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The DAC chip is a voltage output type not a current ( I ) type.

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I suspect that the "burn in" of the DAC has more to do with the PSU side than the signal bit.

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Nope. The two are separate circuits.

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Originally Posted by StanleyB

The DAC chip is a voltage output type not a current ( I ) type.



Nope. The two are separate circuits.

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So what are we saying here as I am now lost.

Does the DAC need to be plugged into an amp for "burn in" and if so does the amp need to be switched on or not. It doesn't make sense to me that the cables make a circuit to a switched off amp.

Regards

When you press the power button on your amp it doesn't disconnect the input on the amp, unless it is a relay controlled input circuit. There is an impedance circuit at the input which appears as a 47K ( or similar ) impedance to the equipment connected at that input. That is irrespective of whether the amp is powered up or not.

I am very tempted to purchase the Bushmaster again. Sadly I was not lucky enough with the first batch but my local dealer emailed me that they have the Bushmaster stock for the Australian folks.

I was wondering is there anyway I can reduce the headphone out gain? The gain was insanely high for k701 and er4s, meaning I could never pass the 7-8 compared to my normal listening volume which is 10-11 on caiman catorized.

The gain can currently only be reduced via a modification. I am hoping to carry such a mod on a BM over the weekend and take pictures of it to show how to do it.
The headphone output comes across as far louder than even many dedicated headphone amps. The main reason for that is the high current output stage and low output impedance of the headphone section.

+2
:cool: