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Old 21st August 2015, 10:41 AM   #1
DQ828 is offline DQ828  Australia
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Default OTTO's VS BIII SPDIF 4

I'm wondering if you think there is any performance difference between the OTTO 2, 4 & BIII SPDIF 4

I ask because when I recently used the OTTO 4, and if I only had 1 source plugged in, it didn't matter which channel I switched to I still got signal coming through from the one source. When I plugged in a second source in it operated as you would expect, doesn't seem right to me.

So if you where building a new DAC which one would you use?

Can I use the BIII SPDIF 4 (which I already have) with a BIIISE by setting up 3 DPST Siganl relays (like you use in the Sidecar)and just use the Arduino to switch channels?

I lean toward the BIII SPDIF 4 because it isolates the signal but in the end with this next DAC I just want the best performance.

Last edited by DQ828; 21st August 2015 at 11:00 AM.
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Old 26th August 2015, 04:11 AM   #2
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Any thoughts?
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Old 26th August 2015, 01:34 PM   #3
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I can't say I would have a strong preference - but since it is a B3 I would probably go the SPDIF-4 /sidecar route.
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Old 26th August 2015, 02:00 PM   #4
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You need to ground the unused inputs on the OTTO-4
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Old 27th August 2015, 08:18 AM   #5
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1) "You need to ground the unused inputs on the OTTO-4" I assume the way to do this is with Shorting Plugs, is that correct?

2)
I am using the BIIISE not the BIII. Can I use the BIII SPDIF 4 (which I already have) with a BIIISE by setting up 3 DPST Siganl relays (like you use in the Sidecar)and just use the Arduino to switch channels?
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Old 27th August 2015, 01:01 PM   #6
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1 - won't hurt - I just meant referenced to GND weakly using resistors (otto has spots for this if I remember correctly).

2 - for B3SE your best choice is the otto-4 or a simple rotary switch.
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