The NuPrime HD-AVP and HD-AVA

All-digital HT preamp/processor, Media Server, DAC and Power Amp (HD-AVA only).

HD-AVP is an excellent all-in-one product equivalent to "AVP + Media Server + DAC-10 USB DAC". HD-AVA offers the additional 200W X 2 power amp that is similar in performance to IDA-16 amp. With the discounted price, you are essentially getting the AV processor for free.

The NuPrime HD-AVP all-digital HT preamp/processor delivers ultra-high resolution USB audio decoding at PCM 384K or DSD256, 24bit/192kHz digital audio, hard-disk media playback, wireless streaming and superb 4K HD video. There are six HDMI, two optical, two coaxial, four stereo analog, one USB Audio and three USB Host (for hard drive) inputs. The audio outputs include 7.1- channel RCA, 2-channel Zone1, Zone2 and Line Out, 4-channel XLR. A built-in Wi-Fi network supports Airplay, DLNA and Miracast. Two HDMI outputs can be selected from any of the six inputs. The HD-AVP easily accommodates the most complex home theater system configurations. The HD-AVA is HD-AVP with the addition of 200W x 2 power amp utilizing NuPrime Reference LE class amplifier technology.

Audio Features:

  • Supporting the latest HD audio decoding, including Dolby TrueHD, Dolby Digital Plus, DTS Master, DTS Hi-Res.
  • SD audio decoding compatible with Dolby Digital (EX), DTS, DTS ES (D6.1, M6.1), DTS 96/24, up to 192k PCM for 7.1 CH etc.
  • Supporting matrix technology such as Dolby Pro Logic IIz, DTS Neo:6 etc.
  • Intelligent room acoustic scanning feature
  • Powerful bass management feature for individually managing front, center, surround, and rear
  • speakers over a cross-over filter. Increasing the performance of single / double post
  • positioning devices.
  • Comes with an equalizer of eleven different options and settings.
  • Comprehensive cross-over design.

Video Features:

  • Supporting HDMI 1.4
  • 6 HDMI inputs, 2 HDMI outputs: HDMI 1/ HDMI 2/ HDMI 3/ HDMI 4 support up to 4K, HDMI 5 / HDMI 6 supports up to 1080P.
  • HDMI supports up to 4K, YUV, RGB, supporting DVI mode, supporting HD audio, 8 CH LPCM.
  • Supporting 3D video playback
  • Supporting HDMI CEC control management
  • Supporting HDMI ARC audio return
  • Video input compatibility: HDMI/DVI, 480P, 576P, 720P50, 720P60, 1080i 50, 1080i 60, 1080P 50, 1080P 60, 1080P 24, 2160P 30, 2160P 24.
  • Including hard-disk player, 3 USB ports (1 in front panel 2 in back panel), capable of playing audio/video directly from USB drive or hard-disk drive.

The HDMI 1.4 specification supports multiple 4K formats: 3840 pixels wide by 2160 pixels high @ 24Hz | 25Hz | 30Hz 4096 pixels wide by 2160 pixels high @ 24Hz

If we choose to use HDMI 2.0 with HDCP2.2 content protection, chip sets supporting HDMI 2.0 cannot decode the hard disc's non-protected material. Since one of the main features of HD-AVP is the playing of downloaded music and video from local hard drives, we decided to support only HDMI 1.4. Further, HDMI 2.0 is best used as a video standard allowing users to connect to TVs with multiple HDMI inputs. We recommend employing HD-AVP as your movie and music server, along with game consoles and other AV devices.


  1. VFD Display: On screen display for various information
  2. Remote Control signal receiver
  3. Stand by indicator: LED lid up when HD-AVA is in standby.
  4. USB Host 1: USB Input 1. For connecting to USB thumb drive or hard-drive storage.
  5. Input Selection: Input selection by turning the knob. (TV, Player, HDMIs, Tuner, Coaxial, Optical, Analog, USB)
  6. Home button: opens up on-screen Home menu.
  7. Menu button: Access menu settings.
  8. Left and Right selection cursor: In Player input selection and menu, move cursor according to the direction on the on-screen menu. Toggle input channel selection if not in Player input selection mode.
  9. Up and Down selection cursor: Moving up and down in menu.
  10. Enter: confirm selection on the on-screen menu
  11. Return: return to the previous screen on the menu
  12. Power button: Power on/off button
  13. Volume Control: decrease and increase volume, ranging from -∞ ~ +15dB, 0.5dB increments.


  1. FM Antenna: For antenna installation to boost signal.
  2. Stereo Analog In: 4 sets of Analog inputs (AN1/SAT, AN2, AN3, AN4)
  3. USB DAC Input & Output (DSD support)
  4. Digital In: 2 Coaxial & 2 Optical (CO1/DVD, CO2 : OPT1/CD, OPT2)
  5. HDMI Output: HDMI 1 and HDMI 2 output. Only HDMI 1 has ARC function.
  6. HDMI inputs: 6 individual HDMI inputs (HDMI/BD, HDMI2/Box, HD3, HD4, HD5, HD6)
  7. Setup Mic: Connecting to microphone for room equalization
  8. Bluetooth expansion port: For connecting NuPrime BTR-8 Bluetooth receiver, supporting APT-X.
  9. Trigger Out: Connecting to power amplifier unit enables power on by NuPrime HD-AVA. (12V/120mA)
  10. RS232: Serial com port
  11. Mini USB port (For upgrade): For upgrading firmware for NuPrime HD-AVA.
  12. Speaker Output: Stereo Speaker Output.
  13. 7.1 CH output (In-balanced): FR, FL, SR, SL, SRB, SLB, Center, and Subwoofer.
  14. Mix Output L/R: Stereo output capable of combining multiple audio signal inputs.
  15. Zone output: Providing three additional and independent zones for multi-room capability. Each zone can be set with independent signal and volume.
  16. IR In/Out: Supporting IR receiver and IR transmitter allowing receiving and sending remote signals with indirect line of sight.
  17. USB Host 2 / USB Host 3: For connecting to USB thumb drive or hard-drive storage.
  18. LAN port: For internet connection.
  19. AC inlet & Fuse compartment: For power cord to connect to household power outlet and installation of fuse.

*When USB Input is the selected source, the USB DAC outputs appear on 7.1 L&R RCA and XLR outputs, in addition to USB DAC L&R outputs.

Other Specifications:

HD-AVP Product dimension: 100 mm x 430 mm x 318 mm (H x W x D); Product weight:6.5kg;   HD-AVP Package dimension: 200 mm x 560 mm x 430 mm (H x W x D); Package Weight:9.5kg   HD-AVA Product dimension: 100 mm x 430 mm x 335 mm (H x W x D); Product weight:8.0kg   HD-AVA Package dimension: 200 mm x 560 mm x 430 mm (H x W x D); Package Weight:11.0kg  

Frequently Asked Questions

How to preset FM Tuner stations with HD-AVP and HD-AVA?

  1. Go to OSD setup.
  2. Select Setup tab, then Input Config and then Input setup.
  3. Go to Tuner setup.                 
  4. Choose your desire frequency station you wish to store as preset.  Once the frequency is selected, go to Memory option: "Choose your desired station. 50 preset stations"

What are the meaning of speaker modes TDL-02, .... in HD-AVP?

These are manufacturer preset values that have no meaning to end users. It was part of development setup that should have been removed. This setup will be removed in future firmware update. Please ignore them.

What is the difference between Pure Direct, Pure Audio, and USB Audio?

Pure Direct and Pure Audio modes are part of the multi-channel mode and utilize the high quality multi-channel DAC. USB Audio goes through a separate high performance stereo DAC board. 

Pure Audio is a 2-channel Stereo mode where multi-channel inputs from the source are converted to 2 channel audio. Pure Direct is a pass-through (from the source device such as BluRay player) mode without any EQ effect. 

Don't confuse Pure Audio or Pure Direct with USB Audio input. If you have a computer connected to HD-AVP through USB Audio, by selecting the USB Audio as input source you will be utilising the high-end stereo DAC (this USB Audio DAC has the same performance as NuPrime DAC-10) instead of the multi-channel DAC for surround sound decoding.

The L&R outputs from 7.1 outputs come from USB DAC outputs or AVP outputs. The USB L&R outputs come only from the USB DAC.  That means if you are using USB Audio as the input, there are two sets of outputs: L&R outputs from 7.1 outputs and USB L&R outputs. This allow you to setup a separate high-end stereo system in another room. Therefore, if you select USB Input as the source, then the USB DAC outputs go to 7.1 L&R RCA and XLR and USB L&R outputs.

IR codes for HD-AVP

#define REMCODE_OFF 0x02
#define REMCODE_ON 0x20
#define REMCODE_DIRECT 0x0e
#define REMCODE_STEREO 0x13
#define REMCODE_MODEDN 0x11
#define REMCODE_MODEUP 0x19
#define REMCODE_INPUT1 0x1f
#define REMCODE_INPUT2 0x03
#define REMCODE_INPUT3 0x04
#define REMCODE_INPUT4 0x05
#define REMCODE_INPUT5 0x1c
#define REMCODE_INPUT6 0x06
#define REMCODE_INPUT7 0x07
#define REMCODE_INPUT8 0x08
#define REMCODE_Bluetooth 0x09
#define REMCODE_AMFM 0x0a
#define REMCODE_HD5 0xFE
#define REMCODE_HD6 0xFD
#define REMCODE_OPT2 0xFC
#define REMCODE_COAX2 0xFB
#define REMCODE_AN2 0xFA
#define REMCODE_AN3 0xF9
#define REMCODE_AN4 0xF8
#define REMCODE_EXT71 0xF7
#define REMCODE_PLAY 0x00
#define REMCODE_FREQDN 0x0b
#define REMCODE_MENU 0x14
#define REMCODE_OK 0x18
#define REMCODE_HOME 0x10
#define REMCODE_RETURN 0x49
#define REMCODE_DOWN 0x12
#define REMCODE_UP 0x16
#define REMCODE_RIGHT 0x0c
#define REMCODE_LEFT 0x17
#define REMCODE_EXIT 0x4a
#define REMCODE_INFO 0x50
#define REMCODE_OPTION 0x4d
#define REMCODE_VOLUP 0x4b
#define REMCODE_VOLDN 0x4f
#define REMCODE_A 0x1b
#define REMCODE_EQ 0x44
#define REMCODE_B 0x42
#define REMCODE_HD2_OUT 0x1A
#define REMCODE_C 0x40
#define REMCODE_DIM 0x5a
#define REMCODE_D 0x48
#define REMCODE_MUTE 0x45
#define REMCODE_REPEAT 0x57
#define REMCODE_CEC_SubTitle 0x5b
#define REMCODE_CEC_Audio 0x47
#define REMCODE_CEC_PlayPause 0x4E

If you are using a Pronto IR remote control, replace "0x" in the above code to "20bf".  If still does not work, replace 0x with FD04.


How to remove humming noise when another DAC or AVP is connected to MCH-K38 with XLR cables?

Due to the XLR shield and ground pin specification (see, some manufacturers implement it differently from others, therefore there could be humming noise if a non NuPrime product is connected to MCH-K38 using XLR cables.

XLR Hum Eliminator products from can be used to completely remove the noise and improve performance.

What are the video resolutions supported by HD-AVP?

Playback from hard disk or DLNA (LAN) can only support up to 1080P resolution.  Playback from HDMI support HDMI 1.4 4K but not HDMI 2.0 4K. The HDMI 1.4 specification supports 4K formats: 3840 pixels wide by 2160 pixels high @ 24Hz | 25Hz | 30Hz 4096 pixels wide by 2160 pixels high @ 24Hz

Airplay does not work for HD-AVP and HD-AVA

Please download the latest firmware for HD-AVP and HD-AVA.

Is the SUB output active in 2 channel stereo?

Sub output is available for all selections.

What are "bass management", "single/double post positioning device", and "comprehensive cross-over design" features ?

These are all marketing descriptions.

Bass management is the LFE in the audio setting (OSD setting > Setup > Speaker Setup > LFE Level)

"Increasing the performance of single/double post positioning devices" and "comprehensive cross-over design" means there are variety of settings you could configure the unit to suit your system, such as speaker range/position, speaker size, speaker level, etc.


What is the performance difference between DAC-10 and HD-AVP?

HD-AVP includes the same high performance USB DAC implementation as DAC-10, but DAC-10 consist of a better preamp design using switch resistor technique. DAC-10 also includes other digital inputs that go through the same DAC.

In the HD-AVP, only the USB input goes through the stereo DAC for pure 2-channel audio and the other digital inputs are decoded by the multi-channel DAC within the AV processor circuit. In summary, the HD-AVP has a USB DAC that is close to the DAC-10 performance, but offer many additional media server and AV processing features.

Overall, HD-AVP offers tremendous value by combining high quality AVP and 2-channel stereo in a single chassis.