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Please check the instructions guide: charge for at least 20 hours!
The Tenergy 9Vs are one of the top rated cells on the market. Just make sure to charge as instructed.
O2 AMP + ODAC
- Thread starter NimbleTurtle
- Start date
Please check the instructions guide: charge for at least 20 hours!
The Tenergy 9Vs are one of the top rated cells on the market. Just make sure to charge as instructed.
maheeinfy
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Run time varies with your listening style and headphones. Average run time is about 6 hours on a full charge.
dr3wd4wg
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Is there any benefit to purchasing an OL DAC and an Objective2 separately versus buying the O2+ODAC revB combo?
kiler
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I dont think there is any benefit, if anything you will lose a compact form factor 
dukefx
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Yes, there is. More room for tinkering and also the ability to keep one and replace the other with something else.
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I dont think there is any benefit, if anything you will lose a compact form factor
None?!
ODAC is powered by USB, which is its only input.
OL DAC accepts optical (TOSLINK) and USB input, and is powered by an AC adapter, so it has no reliance on the USB 5V rail. OL DAC exceeds every specification of ODAC, some by an order of magnitude, although both are considered transparent.
Faber65
100+ Head-Fier
I dont think there is any benefit, if anything you will lose a compact form factor
None?!
ODAC is powered by USB, which is its only input.
OL DAC accepts optical (TOSLINK) and USB input, and is powered by an AC adapter, so it has no reliance on the USB 5V rail. OL DAC exceeds every specification of ODAC, some by an order of magnitude, although both are considered transparent.
The OL DAC is very transparent indeed.
And the Toslink optical input does allow to use a coax connection as well (with an adapter).
leeperry
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So what's the story with the RCA input at the back of the desktop O2 on massdrop? Some crappy wires going from the PCB front minijack eh? ^^
raoultrifan
Headphoneus Supremus
I don't think they're crappy, after all it's the same output impedance. Two crossed copper wires (or shielded) should be perfectly fine I'd say.
Also, I believe the RCA version has no jack input at all, unless there's a button involved to select the source.
Also, I believe the RCA version has no jack input at all, unless there's a button involved to select the source.
dukefx
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Mine has a 6.3mm, a 3.5mm and 2 pairs of RCAs and no switch. Basically use whichever suits you best. I'm using the RCAs.
leeperry
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But did you open it? Got cheapo wires going from the PCB front to the back of the enclosure?
dukefx
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Mine's modded, ofc I opened it. Wires are standard copper twisted pairs, but even if they were some "cheapo" garbage there'd be 0 difference.
raoultrifan
Headphoneus Supremus
Nope, but I've seen some pics around this forum. Anyway, mine is DIY; I've added myself 2xRCA gold-plated plugs and a small metallic switch. Cables were shielded and I have no hum or additional noise.
leeperry
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Sweet, thanks! So cables don't matter but opamps do even though nwadude said they wouldn't, am I getting this right?
So it's indeed a ghetto RCA output, BTW is there an explanation of the role of each opamp please?
I'm getting a RevA O2+DAC mayflower, hopefully opamps will be rollable too.
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