So how do you get multi-channel digital into the B3? Is there anything special about connecting up an HDMI input, or is it just wires? Thanks.
The input is still DSD, I2S or SPDIF. Only the amount of available input pins is much bigger, as Russ has opted to make all of the inputs of the 9018 available on this version.
Register setting switch mappings for Buffalo III
Buffalo III on-board controller register settings I have so far:
In all cases 0 is open and 1 is closed.
SW1
switches 1 and 2 will for a two bit register for setting the modulator depth
00 = 6 bit
01 = 7 bit
10 = 8 bit
11 = 9 bit;
switch 3 is used to set true(0) or pseudo(1) differential mode.
switch 4 sets fast(0) or slow(1) filter roll-off mode.
Switches 5 and 6 choose DPLL bandwidth
00 default (best adaptive)
01 will be lowest
10 will be medium
11 will be highest
Switch 7 will control DPLL BW x 128 feature. This is handy for locking on even difficult I2S sources.
0 = normal
1 = * 128 mode
Switch 8 will enable or disable auto-detection of SPDIF sources. Some very high sample rate PCM/DSD sources can confuse the SPDIF detection scheme and so for some of those sources it is better to turn off SPDIF detection to avoid issues.
0 = normal
1 = No SPDIF detection
The second switch - SW2 is assigned as follows
Pins 1 and 2 are used to select SPDIF sources when using SPDIF mux. These two switch should be left open when using the remote switch module (more on that later) to select sources. We also have a small 4 input spdif board which is designed to mate with the Bufallo III. Along with a module call "sidecar" that allows you to switch between PCM/DSD sources and SPDIF.
all of the other switches on SW2 can be used.
Some possibilities:
1) Switching between PCM modes (not limiting to just I2S).
2) Switching between DSD modes
3) turning off OSF
4) turning of jitter eliminator
Any other ideas? Now is your chance to speak up! 🙂
Cheers!
Russ
Buffalo III on-board controller register settings I have so far:
In all cases 0 is open and 1 is closed.
SW1
switches 1 and 2 will for a two bit register for setting the modulator depth
00 = 6 bit
01 = 7 bit
10 = 8 bit
11 = 9 bit;
switch 3 is used to set true(0) or pseudo(1) differential mode.
switch 4 sets fast(0) or slow(1) filter roll-off mode.
Switches 5 and 6 choose DPLL bandwidth
00 default (best adaptive)
01 will be lowest
10 will be medium
11 will be highest
Switch 7 will control DPLL BW x 128 feature. This is handy for locking on even difficult I2S sources.
0 = normal
1 = * 128 mode
Switch 8 will enable or disable auto-detection of SPDIF sources. Some very high sample rate PCM/DSD sources can confuse the SPDIF detection scheme and so for some of those sources it is better to turn off SPDIF detection to avoid issues.
0 = normal
1 = No SPDIF detection
The second switch - SW2 is assigned as follows
Pins 1 and 2 are used to select SPDIF sources when using SPDIF mux. These two switch should be left open when using the remote switch module (more on that later) to select sources. We also have a small 4 input spdif board which is designed to mate with the Bufallo III. Along with a module call "sidecar" that allows you to switch between PCM/DSD sources and SPDIF.
all of the other switches on SW2 can be used.
Some possibilities:
1) Switching between PCM modes (not limiting to just I2S).
2) Switching between DSD modes
3) turning off OSF
4) turning of jitter eliminator
Any other ideas? Now is your chance to speak up! 🙂
Cheers!
Russ
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IIR bandwidth? That would require 2 positions.
De-emphasize? That would require 2 positions.
And how about the mono settings: left/right, mono/8-channel? Would those be required, or are they controlled by the jumpers at the bottom?
De-emphasize? That would require 2 positions.
And how about the mono settings: left/right, mono/8-channel? Would those be required, or are they controlled by the jumpers at the bottom?
PCM mode would be more useful if it did not require 32 bit frames...
There is notch delay and phase delay (I have no idea what they do but they are available as register settings)
Are there any undocumented registers? 🙂
There is notch delay and phase delay (I have no idea what they do but they are available as register settings)
Are there any undocumented registers? 🙂
Good features, Russ!
I would like to see:
3) turning off OSF
4) turning of jitter eliminator
Implemented.
Thanks!
/S
I would like to see:
3) turning off OSF
4) turning of jitter eliminator
Implemented.
Thanks!
/S
You cannot connect HDMI. HDMI is encrypted and requires a licensed decoder chip. For DSD, you need to tap the audio signals inside a player, after they have been decoded.
Switching between Normal and Phase Mode of DSD. The future replacement of audiophile vinyl will be 64fs and 128fs DSD Disk and downloads. You heard it here first 🙂
Yes I meant to mention IIR bandwidth. That will definitely be added.
The auto de-emphasis only applies to SPDIF and it only ever turns on if it is maked as present in the SPDIF protocol. So there is no harm in leaving it on.
Yes as far as output summing etc goes, that has to be handled via the jumpers. There is no way around that. 🙂
1) That would be part of the PCM setting scheme. I can only make it support whatever the chip will support so will need to double check the DS.
2) notch delay is useful in some modes, I may allow changing it if I have any switches left. Dustin and I talked about its effect and in all cases it is minuscule. So its not a high priority.
3) Yes. But people trust me to keep things confidential so I will. 🙂
That is what I meant by switch DSD modes earlier. I do believe this will be one of the switches for sure.
That's fine, I specificly asked as there is a bit for it in the registers. If there is a spare switch, I'd assign it to an extra bit for the DPLL value. That would give a finer control, and match better with the actual settings.
It would be GREAT to move all those DIP switches to the front panel on rotary/rocker switches. So freak at least, while almost everybody can only choose volume and source, you could be able to change IIR, OSF, etc.
Not that you will really need those controls, but the important thing is TO HAVE THEM 🙂
To be able to control each parameter right on the front panel, that freakin' exclusivity.
Not that you will really need those controls, but the important thing is TO HAVE THEM 🙂
To be able to control each parameter right on the front panel, that freakin' exclusivity.
Oh, yes for mono and selecting left or right. There will be a switch for each of those too.
let me work out what is left. 🙂
let me work out what is left. 🙂
You could do that no problem. That is what the IO header is for. You would just have to run a ribbon cable or wire to the switches 🙂
are the tridents a mandatory requirement for the Buffalo - III ?? there are mixed opinions regarding this in other threads..anyone...??
As I understand it, you need either suitable tridents, or some other regulators of your choice. BIII alone won't operate
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