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Drop O2 + SDAC DAC/Amp
01 / 20
Drop O2 + SDAC DAC/Amp
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Product Description
For the objectivist audiophile seeking a complete desktop solution, there’s the Massdrop O2 + SDAC: a DAC/amp that brings two great products together in one affordable, easy-to-use package. It features the Massdrop Objective 2 (or O2), the community’s favorite solid-state amp, alongside the Massdrop x Grace Design Standard DAC (or SDAC), a collaboration with a company long known for its incredibly accurate, transparent studio gear Read More
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1
Sep 26, 2021
I am new to the audio world so forgive me for this!! What is the max power output if I were to use this on my pc? Is it 60O ohms? If so then it should be able to power my 58Xs and pretty much anything else I throw at it without issue for the most part, correct?
raansire7
1514
Sep 28, 2021
- Max output (33 ohms): 613 mW
- Max output (150 ohms): 355 mW
- Max output (600 ohms): 88 mW
CactaurCactus
8
Jun 18, 2021
When using the RCA outputs on the rear, does inserting a headphone into the front jack automatically mute the RCA output?
Anonawesome
24
Jul 11, 2021
Ignore the last poster. The RCA jacks are outputs. No, the unit does not disable the RCA outputs when you connect headphones unfortunately. So you will want a separate way to turn off your speakers.
Erenau
18
Jun 28, 2021
Is this powerful enough to comfortably drive the 6XX, or should I go for standard gain O2 amp only? Also does it make a difference to plug in DC power adapter when powered by usb?
Anonawesome
24
Jul 11, 2021
Yes you will want this or another amp for the 6XX headphones. A normal device (PC, phone, whatever) will have to "max out" the volume to get it to a barely-acceptable volume. The amp in the o2 dac/amp has more than enough power for whatever volume you want.
No you cannot use the device with just DC. It's super annoying, and I just had to buy a new plug after moving to a 240v country, but the open source patent doesn't allow anyone to modify the design to something more modern and reasonable.
Michael-Q
244
Jul 28, 2021
dlovelock(Going from memory so numbers might be a tad off - and I'm assuming the DAC gets its power from the usb cable)
It semi depends on the max output current of a adapter as well, but 14 to 15 VAC is a good amount. Probably ideal adapter specs: https://jdslabs.com/product/15vac-power-adapter/
16VAC is also fine but the higher you go risks over heating the psu circuit. Too high and the circuit gets fried.
The adapter's output current can safely be 1000's of amps and it wont' break anything but your wallet.
The minimum current I'd say is around 320mA (140mA for each channel plus a little more for essentially just energizing the circuit). You can actually go lower than 320 but the O2 won't reach the rated power specs.
12VAC might work if it has 1 or 2 A output current but I wouldn't do that unless that's all you can find.
(Edited)
drey08
5
Oct 2, 2021
AnonawesomeWhat kind of power plug did you buy? How much volts/ampers? I want to buy this DAC but I'm in a 220v country.
RayF
22218
Jul 19, 2022
Anonawesome
Been getting far more than "barely-acceptable volume" from any number of garden variety "whatevers" for years now. Of course if one is using a "PC" (meaning something not Apple), they are working at a disadvantage from the get go.
I've got nothing against amplifiers and DACs--I have a few (I prefer combined rather than separate units). My point is that telling people they must use XXX device to operate their XXX headphones, is generally bullshit advice--unless, as mentioned, they're stuck with ancient, cobbled together, windoze devices.
By the way, that little white things hanging from the iPhone in the photo below is a DAC (or at least contains a DAC) and allows one to connect their 4xx or 6xx (with 3.5mm plugs) to prior generation (Lightning equipped iPhones and iPads). It was included free with those devices. It works fine and sounds great
So whether a guy only has an assortment older Apple gear laying around (or lucky enough to have a discontinued Oppo HA-2 in the mix), one can enjoy their headphones as-is, or amped and still experience VERY GOOD sound quality.
https://drop.com/talk/9773/talk/2208696?utm_source=linkshare&referer=B2BDHC
https://drop.com/talk/9773/talk/2208696?utm_source=linkshare&referer=B2BDHC
Drogemuller
0
Jan 2, 2022
Hey so i am little new in the audio space and wanted to know if this solution is viable for my pc setup.
i have a usb mic with a 3.5 mm headphone jack which i wanna use so i can hear when i talk and there fore i was thinking that i could get a cable so that i could connect the dac/amp to the 3.5 mm headphone jack (with the usb c plug on the back of the o2) and then plug my headphones into the o2 dac.
the setup would look like this
pc to microphone to dac/amp with (3.5 jack to micro usb) to a pair of hd 6xx? could this work or would i not be getting any use out of the dac then?
this is the mic btw
Svive Leo Studio kit
Evshrug
4130
Keyboard Club Member
Jan 3, 2022
Hey, some general info to help you out (I can’t see the date you asked, so I apologize if I’m raising the dead here).
Short answer: it would work, but not the way you think.
DAC stands for Digital to Analog Converter - computer files and PC games are digital audio sources, but all speakers (even the little speaker drivers in headphones or earbuds) require analog power to create an electromagnet > magnetic push/pull > vibration movements that we hear as sound. So, all PC audio paths require a DAC somewhere.
In your case, your Svive microphone is connected to your PC by USB (which is a “digital” connection) and it has a DAC and ADC inside, as well as a little amplifier with not enough power for your Sennheiser HD 6xx (probably). The 3.5mm Jack is an analog-only connection, so you wouldn’t use a 3.5mm to MicroUSB cable… since the Svive already did the digital to analog conversion, you would connect the analog 3.5mm headphone monitoring port to the analog RCA jacks on the Objective2 amplifier (or 3.5mm jack, if the O2 amp has one, I forget). Therefore, the O2 would amp the analog signal from the Svive, and it probably would be powerful enough for the HD 6XX.
Ideally, though, you would connect the Microphone to your PC with USB, and then connect the SDAC to another USB port on your PC. That way, you would let each component do what they do best: the Microphone would just be a microphone, and the SDAC is the clearer/more realistic sounding DAC while the O2 amplifier is powerful enough for the HD 6XX.
Thanks for reading my TED talk. I Hope that explaining things provided clarity for you, and didn’t sound too tech-jargon-y.
zach_snyder
0
Mar 26, 2022
I just got a pair of hd6xx and the o2 + sdac amp and as soon as I plug in my headphones and go to a video or something there is no sound, all the lights are on and my pc is registering that everything should be working but they just won't make any sound, I tried everything, even returning my headphones and getting a new pair and returning my amp and getting a new pair.
allsmilesb
110
Mar 26, 2022
If you have windows pc you need to switch your audio setting manual to your DAC. Most likely that is your problem. I have your exact setup and I had to manual switch the pc audio output.
(Edited)
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