Topping VX1 DAC

clayharris

I have a Topping VX1 DAC connected to the Raspberry Pi via USB. How do I set the Pi to send audio out via USB?

Totally green on this, so sorry if this is a silly question!

ACX

Hi clayharris,
have you already checked if your DAC is correctly detected and listed in the "Audio output interface" select menu in the MPD section (MENU > MPD)? If yes, just select it - it should work on the fly.

yakelkun

Hello,

1st great job for runeaudio and it's support and forum. It' a very good alternative to my old squeezebox system....

I'd like to setup a small installation in my bedroom and I'm planning to purchase some Topping VX1.

I'm wondering if the VX1 support hardware control (volume control) with runeaudio ?

Can you confirm please as VX1 has my prefernce...

Regards.

hondagx35

Hi yakelkun,

hardware volume will work, but not out of the box.
The DAC (Topping VX1) has to be added to our database.

Frank

yakelkun

Thanks for this lightning fast response !!

When you say must be integrated, you mean an updated version, or updated by me using some linux command ?

Here are the VX1 spec : http://www.tpdz.net/en/products/vx1/index.htm

Features
 	
Auto turn on / turn off synchronously with your PC (Only in USB mode) 
Tripath TA2021B Digital Amplifier
VIA VT1620A USB to S/PDIF
NXP UDA1351TS DAC
TI OPA2134 Operational Amplifier

HIFI Electronic Components:
TOKO digital amplifier Inductance
ALPS Potentiometer
KOA Resistance
nichicon FW Capacitance 
WIMA Capacitance
EPCOS Capacitance
TAKAMISAWA Relay

 	User's manual download
 	Specifications
Analog input	RCA input x 1 (L & R channel)
Digital input	USB
Amplifier output	Binding Post (L & R channel), BTL output
Headphone output	6.35mm
Maximum sample bit of DAC	24bit
Maximum sample rate of DAC	96kHz
Net weight	Approx 700g (unit only)
Dimensions	Approx 20CM x 13.2CM x 5CM
Includes	1 x VX1 
1 x AC 100V-240V input, DC14V4A output adapter 
(CE, FCC, PSE, UL certified)
1 x 6.35 to 3.5 headphone adapter
1 x USB cable 
1 x user's manual
Speaker amplifier:
Suitable Speaker Impedance	4-8Ω
Maximum output power	24.4W (RL=4Ω, THD+N=10%)
 	13.9W (RL=8Ω, THD+N=10%)
Output resistance	0.19Ω
Minimum THD+N	0.003%
THD+N(@1kHz)	0.019%
Frequency response	20-20kHz±1.1dB
Input sensitivity	420mVrms
Noise	<1mV
Gain(@1kHz)	27.2dB
Headphone amplifier:
Suitable Headphone Impedance	16-300Ω
Maximum output power	140mW (RL=32Ω, THD+N=1%)
Maximum output voltage swing	3.6Vrms
Minimum THD+N	0.002% (RL=32Ω, Pout=50mW)
THD+N(@1kHz)	0.020%
Frequency response	20-20kHz±0.6dB
Input sensitivity	1.1Vrms
Noise	<10μV
Gain(@1kHz)	6dB
Built-in USB DAC:
Maximum output voltage swing	2.44rms@1kHz
THD+N(@1kHz)	0.0082% (96kHz sampling rate)
Noise	<25μV
SNR	101dB

It's nice....

But hardware control is a must have to me....

hondagx35

Hi yakelkun,

When you say must be integrated, you mean an updated version, or updated by me using some linux command ?

The latter, you have to do something like this:

redis-cli hset acards_details Topping xxxxxxx "{\"sysname\":\"Topping xxxxxxx\",\"extlabel\":\"Topping VX1",\"mixer_numid\":\"1\",\"mixer_control\":\"Master\",\"hwplatformid\":\"01\",\"type\":\"USB\"}"

But we need the actual (with Topping VX1 connected) debug data for this.

Frank

hondagx35

Hi yakelkun,

are where different models?

DAC: USB Controller by Burr-Brown PCM2704 + CS3310 volume control

see here

The DAC chip is the UDA1351TS

Frank

yakelkun

For me PCM2704 is TOPPING TP30 MArk 2 : http://www.tpdz.net/en/products/tp30mk2/

Features
 	
Auto turn on / turn off synchronously with your PC (Only in USB mode) 
Support Android 4.0 and higher smart phones (Some models does not support) 
Tripath TA2024 Digital Amplifier
TI PCM2704 USB DAC
TI OPA2134 Operational Amplifier

HIFI Electronic Components:
TOKO digital amplifier Inductance
ALPS Potentiometer
KOA Resistance
nichicon FW Capacitance
nichicon MUSE ES Capacitance 
WIMA Capacitance
EPCOS Capacitance
TAKAMISAWA Relay

 	User's manual download
 	Specifications
Analog input	RCA input x 1 (L & R channel)
Digital input	USB
Amplifier output	Binding Post (L & R channel), BTL output
Headphone output	3.5mm
Maximum sample bit of DAC	16bit
Maximum sample rate of DAC	48kHz
Net weight	Approx 530g (unit only)
Dimensions	Approx 17.7CM x 12.2CM x 3.8CM
Includes	1 x TP30MK2 
1 x AC 100V-240V input, DC12V3A output adapter 
(CE, FCC, PSE, UL certified)
1 x USB cable 
1 x user's manual
Speaker amplifier:
Suitable Speaker Impedance	4-8Ω
Maximum output power	16.3W(RL=4Ω, THD+N=10%)
 	9.7W(RL=8Ω, THD+N=10%)
Output resistance	0.2Ω
Minimum THD+N	0.003%
THD+N(@1kHz)	0.012%
Frequency response	20-20kHz±0.6dB
Input sensitivity	390mVrms
Noise	<1mV
Gain(@1kHz)	28dB
Headphone amplifier:
Suitable Headphone Impedance	16-300Ω
Maximum output power	140mW(RL=32Ω, THD+N=1%)
Maximum output voltage swing	10Vpp
Minimum THD+N	0.001%(RL=32Ω, Pout=45mW)
THD+N(@1kHz)	0.03%
Frequency response	20-20kHz±1.2dB
Input sensitivity	1.0Vrms
Noise	<10μV
Gain(@1kHz)	6.5dB

Here are the infos about the VX1... I don't know if there are some revision with different DAC...

Topping VX1 : http://www.tpdz.net/en/products/vx1/index.htm

Auto turn on / turn off synchronously with your PC (Only in USB mode) 
Tripath TA2021B Digital Amplifier
VIA VT1620A USB to S/PDIF
NXP UDA1351TS DAC
TI OPA2134 Operational Amplifier

HIFI Electronic Components:
TOKO digital amplifier Inductance
ALPS Potentiometer
KOA Resistance
nichicon FW Capacitance 
WIMA Capacitance
EPCOS Capacitance
TAKAMISAWA Relay

    User's manual download
    Specifications
Analog input   RCA input x 1 (L & R channel)
Digital input   USB
Amplifier output   Binding Post (L & R channel), BTL output
Headphone output   6.35mm
Maximum sample bit of DAC   24bit
Maximum sample rate of DAC   96kHz
Net weight   Approx 700g (unit only)
Dimensions   Approx 20CM x 13.2CM x 5CM
Includes   1 x VX1 
1 x AC 100V-240V input, DC14V4A output adapter 
(CE, FCC, PSE, UL certified)
1 x 6.35 to 3.5 headphone adapter
1 x USB cable 
1 x user's manual
Speaker amplifier:
Suitable Speaker Impedance   4-8Ω
Maximum output power   24.4W (RL=4Ω, THD+N=10%)
    13.9W (RL=8Ω, THD+N=10%)
Output resistance   0.19Ω
Minimum THD+N   0.003%
THD+N(@1kHz)   0.019%
Frequency response   20-20kHz±1.1dB
Input sensitivity   420mVrms
Noise   <1mV
Gain(@1kHz)   27.2dB
Headphone amplifier:
Suitable Headphone Impedance   16-300Ω
Maximum output power   140mW (RL=32Ω, THD+N=1%)
Maximum output voltage swing   3.6Vrms
Minimum THD+N   0.002% (RL=32Ω, Pout=50mW)
THD+N(@1kHz)   0.020%
Frequency response   20-20kHz±0.6dB
Input sensitivity   1.1Vrms
Noise   <10μV
Gain(@1kHz)   6dB
Built-in USB DAC:
Maximum output voltage swing   2.44rms@1kHz
THD+N(@1kHz)   0.0082% (96kHz sampling rate)
Noise   <25μV
SNR   101dB

So DAC is --->>> NXP UDA1351TS DAC

DAC spec : http://www.nxp.com/documents/data_sheet/UDA1351TS.pdf