• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). Come here to have fun, be ready to be teased and not take online life too seriously. We now measure and review equipment for free! Click here for details.

Review and Measurements of Okto DAC8 8Ch DAC & Amp

dualazmak

Senior Member
Joined
Feb 29, 2020
Messages
339
Likes
241
Location
Ichihara City, Chiba Prefecture, Japan
DAC8PRO's AES/EBU digital out is the "through" digital signals of channel-1 and channel-2 which means the AES/EBU out is not under the DAC8PRO's pre-amplifier functionality including the volume and gain control. AES/EBU signal contains sync clock information, so you can sync the second DAC (with AES/EBU digital Input function) with DAC8PRO.

I hope my post here will give you some perspectives for your understandings.
 
Last edited:

Neddy

Senior Member
Joined
Mar 22, 2019
Messages
366
Likes
389
Location
Wisconsin
AES outputs are not controlled by the Okto's gain control. Just sayin'.
 

dualazmak

Senior Member
Joined
Feb 29, 2020
Messages
339
Likes
241
Location
Ichihara City, Chiba Prefecture, Japan
AES outputs are not controlled by the Okto's gain control. Just sayin'.
Yes, thanks, I edited into "AES/EBU out is not under the DAC8PRO's pre-amplifier functionality".
 

Neddy

Senior Member
Joined
Mar 22, 2019
Messages
366
Likes
389
Location
Wisconsin
Thank you sir. So easy to mis-type.
OktoDAC 8 's 'Swiss Army Knife' capabilities seem nearly endless!
 

Neddy

Senior Member
Joined
Mar 22, 2019
Messages
366
Likes
389
Location
Wisconsin
a) if you had bi-amped or tri-amped speakers with or without subs.
b) if your CD player had AES (toslink) outputs.
:)
 

waynel

Senior Member
Forum Donor
Joined
Nov 14, 2019
Messages
433
Likes
406
If I just wanted a dac for CDs, what would the reason be for 8 channel dac? Even with be how would you use this?
If you wanted to crossover to subs. I plan on using 4 of the eight channels for 2-channel music : L R sub1 sub2

don’t see any 4-channel DACS with the same performance for a better price.
 
Joined
Dec 20, 2019
Messages
16
Likes
5
My sub is currently one of the weakest links in my setup and it doesn't have any balanced inputs. I know the DAC8 Pro manual discourages the use of balanced to unbalanced connectors due to a quality loss, but could it actually damage the DAC?
 

waynel

Senior Member
Forum Donor
Joined
Nov 14, 2019
Messages
433
Likes
406
My sub is currently one of the weakest links in my setup and it doesn't have any balanced inputs. I know the DAC8 Pro manual discourages the use of balanced to unbalanced connectors due to a quality loss, but could it actually damage the DAC?
Easy fix, just order a pair of Rythmik F18s or E15HP2 if the F18s don’t fit.
 
Joined
Mar 13, 2020
Messages
71
Likes
125
Location
Netherlands
My sub is currently one of the weakest links in my setup and it doesn't have any balanced inputs. I know the DAC8 Pro manual discourages the use of balanced to unbalanced connectors due to a quality loss, but could it actually damage the DAC?
No, it will not damage the DAC. The statement in the owners manual is probably true for all balanced outputs in general. Okto Research clearly wants their products function the way they designed it and that's with a balanced output stage connected to a balanced (pre)amp. Maybe other manufactures care less about it, so don't give the same warning (maybe because they fear customers will look for another unbalanced DAC? ;)). But it's up to you to decide if you hear any sound degradation with a balanced to unbalanced cable or transformer in your particular situation.
 
Last edited:
Joined
Dec 20, 2019
Messages
16
Likes
5
No, it will not damage the DAC. The statement in the owners manual is probably true for all balanced outputs in general. Okto Research clearly want their products function the way the designed it and that's with a balanced output stage connected to a balanced (pre)amp. Maybe other manufactures care less about it, so don't give the same warning (maybe because they fear customers will look for another unbalanced DAC? ;)). But it's up to you to decide if you hear any sound degradation with a balanced to unbalanced cable or transformer in your particular situation.
Ah that's good to know, thanks.

Easy fix, just order a pair of Rythmik F18s or E15HP2 if the F18s don’t fit.
I'd love to, if they were available in Europe!
 

dualazmak

Senior Member
Joined
Feb 29, 2020
Messages
339
Likes
241
Location
Ichihara City, Chiba Prefecture, Japan
OktoDAC 8 's 'Swiss Army Knife' capabilities seem nearly endless!
I fully agree; now we have very sharp and durable "Czech Army Knife"!
 

rccarguy

Active Member
Joined
May 9, 2020
Messages
172
Likes
62
If you wanted to crossover to subs. I plan on using 4 of the eight channels for 2-channel music : L R sub1 sub2

don’t see any 4-channel DACS with the same performance for a better price.

Still don't understand.

How would you use this from a cd player? Or a be player?
 

waynel

Senior Member
Forum Donor
Joined
Nov 14, 2019
Messages
433
Likes
406
Still don't understand.

How would you use this from a cd player? Or a be player?
CD player digital out -> MiniDSP nanodigi->DAC8 pro

the player digital out goes to a dsp room correction and crossover with multiple digital outs which feeds the DAC8 with L R and multiple sub channels
 

kevinh

Active Member
Joined
Apr 1, 2019
Messages
246
Likes
140
Still don't understand.

How would you use this from a cd player? Or a be player?

So you want to say, use JBL M2's without the crown amps and want multiple subs per Geddes or Welti. 4 Channels for M2's and 3 to 4 channels for the subs. as waynel says cd - mimidsp -> Dac 8. If I had the money and room for the speakers that is what I wold do.
 

bigjacko

Active Member
Joined
Sep 18, 2019
Messages
215
Likes
66
If you value performance, minidsp probably does not measure well and will degrade the performance. Use computer based dsp if you have a computer, less money or even free and better performance.
 

waynel

Senior Member
Forum Donor
Joined
Nov 14, 2019
Messages
433
Likes
406
If you value performance, minidsp probably does not measure well and will degrade the performance. Use computer based dsp if you have a computer, less money or even free and better performance.
Do you have any evidence of this? We are talking about digital only like the SHD studio.
 

dualazmak

Senior Member
Joined
Feb 29, 2020
Messages
339
Likes
241
Location
Ichihara City, Chiba Prefecture, Japan
If you value performance, minidsp probably does not measure well and will degrade the performance. Use computer based dsp if you have a computer, less money or even free and better performance.
If any of you are interested in PC specs for digital DSP/crossover software, my post here may be useful, I assume.
 

bigjacko

Active Member
Joined
Sep 18, 2019
Messages
215
Likes
66
Do you have any evidence of this? We are talking about digital only like the SHD studio.
Oh sorry did not know you are talking about digital only. I think digital only should have the same performance as PC because it is just calculating maths in the chips. The adc and dac in minidsp are not very good measuring.
 

dualazmak

Senior Member
Joined
Feb 29, 2020
Messages
339
Likes
241
Location
Ichihara City, Chiba Prefecture, Japan
DAC8PRO's AES/EBU digital out is the "through" digital signals of channel-1 and channel-2 which means the AES/EBU out is not under the DAC8PRO's pre-amplifier functionality including the volume and gain control. AES/EBU signal contains sync clock information, so you can sync the second DAC (with AES/EBU digital Input function) with DAC8PRO.

I hope my post here will give you some perspectives for your understandings.
And, let me remind all of you again just for sure;

DAC8PRO's high quality Headphone OUT is another line-level analog out of CH-1+CH-2 "under the control" of gain and master volume. If you like, you may use it as RCA unbalance OUT of CH-1+CH-2 with gain and volume applied.
https://www.audiosciencereview.com/...ssover-and-multichannel-dac.12489/post-420921
WS000662.JPG
 
Last edited:
Top Bottom