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O1 Headphone AMP/DAC ===> Octavart - Page 2

post #16 of 136
Whats is the best SQ between Octavart and ibasso d1??
post #17 of 136
I own both, and like the iBasso products very much, but the Octavart wins hands down in SQ!! HOWEVER, it lacks a USB input, if this is a consideration, having only analog (RCA) and Optical inputs.

A very inexpensive and satisfactory solution for this lack of USB input is the Behringer UCA 202. It converts a USB signal to Optical. Cost is a very modest $30.00
post #18 of 136
Thread Starter 
I agree with Ron's (HiFlight) assesment. For those who have not tried this unit the level of detail and clarity it provides should put to shame units that cost 2-3 times as much. I am not saying it surpasses them, but since it costs so little (relative term) it should worry the much higher priced options.
post #19 of 136
If I remember correctly, when these were first offered, they cost $399 for the combination amp/dac. $199 each. Is that correct?
post #20 of 136
Is the DAC (not amp) a good value for what you pay? $140 seems like a lot when many good DACs are around this range, such as the Super DAC707, EMU 0404 USB, or Zero DAC. The specs also seem inferior to at least the 0404 (haven't checked the other DAC specs), but if there's one thing I've learned, it's not to listen to specs...

Oh yes, how much output current is 1000mw in mA for this? I know you need voltage or something to convert... not sure which voltage rating you're supposed to use though, or if the needed voltage rating is even listed =\

Also, for the amp section alone, how does it compare to other amps in its price range ($160)?
post #21 of 136
Thread Starter 
Quote:
Originally Posted by CountChoculaBot View Post
Is the DAC (not amp) a good value for what you pay? $140 seems like a lot when many good DACs are around this range, such as the Super DAC707, EMU 0404 USB, or Zero DAC. The specs also seem inferior to at least the 0404 (haven't checked the other DAC specs), but if there's one thing I've learned, it's not to listen to specs...

Oh yes, how much output current is 1000mw in mA for this? I know you need voltage or something to convert... not sure which voltage rating you're supposed to use though, or if the needed voltage rating is even listed =\

Also, for the amp section alone, how does it compare to other amps in its price range ($160)?
To me the sound as a dac/amp combo is very impressive. Also as a single box to have in the office or den makes it a very convenient solution w/ an small footprint.
post #22 of 136
So, basically if I was looking for an amp and dac (size/convenience be damned) that in total would be $300, this is it?

Oh yeah, how do you change the gain? I read another review that said the gain was pretty high, but in the specs it lists different output volts as well as mentioning "adapted load impedence". Does this mean you can change the gain on this?

Also, are those OpAmps on DIP sockets I spy in the last pic?
post #23 of 136
Thread Starter 
Quote:
So, basically if I was looking for an amp and dac (size/convenience be damned) that in total would be $300, this is it?
Don't know, I have not tested every amp/dac combo at $300 or less. I can tell you that IMO it is a great sounding unit that has an small footprint and looks good.

Quote:
Does this mean you can change the gain on this?
I have sent Fang an email, when he responds I will post here.

Quote:
Also, are those OpAmps on DIP sockets I spy in the last pic?
No, the board has holes through which the op-amp has been inserted. Then on the other side (see 1st pic) they applied solder. Should be fairly easy to install sockets.
post #24 of 136
This is an amp in which I would not try to change opamps or gain. It sounds superb in the stock configuration. I found the gain to be appropriate for all of my phones, including my IEMs.


Quote:
Originally Posted by mrarroyo View Post
Don't know, I have not tested every amp/dac combo at $300 or less. I can tell you that IMO it is a great sounding unit that has an small footprint and looks good.



I have sent Fang an email, when he responds I will post here.



No, the board has holes through which the op-amp has been inserted. Then on the other side (see 1st pic) they applied solder. Should be fairly easy to install sockets.
post #25 of 136
That is my experience also, the gain seems to work well with everything.
post #26 of 136
Thread Starter 
Fang responded and there is no gain switch inside the amp. In stock form it has handled the RS-1. K701, K501, RP21, HFI-780, PROline 2500, and DT880 w/ no problem.
post #27 of 136
Quote:
Originally Posted by HiFlight View Post
I own both, and like the iBasso products very much, but the Octavart wins hands down in SQ!! HOWEVER, it lacks a USB input, if this is a consideration, having only analog (RCA) and Optical inputs.

A very inexpensive and satisfactory solution for this lack of USB input is the Behringer UCA 202. It converts a USB signal to Optical. Cost is a very modest $30.00
HiFlight, would the D1 Dac match well with this amp? I got D1 but i am planning to upgrade and if i can still use the D1 dac then it will probably be a good value if i can just get the octavart amp only.

How is the octavart when compared to ibasso P2 would the octavart still be a better choice than P2?
post #28 of 136
Quote:
Originally Posted by sum1 View Post
HiFlight, would the D1 Dac match well with this amp? I got D1 but i am planning to upgrade and if i can still use the D1 dac then it will probably be a good value if i can just get the octavart amp only.

How is the octavart when compared to ibasso P2 would the octavart still be a better choice than P2?
Yes, the Octavart works beautifully with the D1 DAC. I have used this combination very much. IMO, the amp sounds better than my P2.

The bass response is such that you don't need the P2 boost switch, nor the gain switch, as it easily handles all of my different phones.
post #29 of 136
Oh i just realise now that you Hiflight are a prominent contributor of D1 opamp rolling and you own a O1 as well. So i'm guessing no matter what opamp i choose for the D1 it will still sound better if i just get the O1-AmpOnly huh? But what is the sound characteristic of this O1 amp? Warm upfront or cold distant sound?
post #30 of 136
Thread Starter 
sum1, IMO the Octavart (O1 Amp/Dac) is very neutral. It has enough bass and warmth w/o being to much. It also has excellent detail and clarity.
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