Now Trending:

• Ten Best Budget Audiophile Ready Hi-Fi Lossless Hi-RES USB-C Digital Music Players in 2025

• Why the GoPro HERO13 Black Forest Green Pushes the Limits of Action Cameras

• SONY WH-1000X M6

• RUGGED PHONES

 

 Today’s topic title:

 Five Best Audiophile Grade Hi-Fi Lossless Hi-RES USB-C Digital Music Players, up to date by 2025

 Category:   

 Hi-RES Audio

 Designed by Professionals for Audiophiles

[1]

[2]

[3]

[4]

[5]

 Designed by Professionals for Audiophiles

 

  Looking for the ultimate listening experience? You’ve come to the right place. Today, we’re diving into the “Five Best Audiophile HiFi Hi-RES Digital Audio Players” — carefully selected for those who demand nothing but the best.

  There’s something magical about unboxing a new DAP — sleek, solidly built, ultra-low-noise, maybe even featuring pure-tube output. This is the world of Hi-RES Audiophile players: devices designed to bring every note, every detail, every nuance of your music to life.

  Audiophiles love their words: Audiophile Grade, Professional Grade, Ultra High-Quality, State-of-the-Art, Top-End, High Fidelity (HiFi), Hi-Res, High Resolution. These aren’t just buzzwords — they are guarantees of performance, precision, and uncompromising sound. And yes, this level of perfection usually comes at a premium.

  We’ve handpicked five devices that combine stunning design, flawless functionality, and pure audio excellence. They look incredible, perform exceptionally, and yes – they are worth every penny.

  Please, take a look at the table below for a quick overview of their key features and specifications. It’s designed for easy comparison, while each model links to detailed information so you can explore everything that matters.

  We’re here to guide you to your perfect DAP — the one that will transform your music listening into a true audiophile experience.

 

Topic – Content:

1.) iBasso DX340 Flagship DAP – HiFi Hi-RES Digital Audio Player,

2.) SHANLING M8T Flagship Tube DAP – HiFi Hi-RES Digital Audio Player,

3.) Astell&Kern A&norma SR35 DAP – HiFi Hi-RES Digital Audio Player,

4.) Fii0 M17 DAP – HiFi Hi-Res Digital Audio Player,

5.) Astell&Kern A&Ultima SP4000 DAP – HiFi Hi-RES Digital Audio Player,

Link to Cross-reference TABLE 1.

 

Designed by professionals for Audiophiles

 Let’s see our 5-Best selection:

  Table 1.  Presents the top 5 models as of 2025, highlighting essential features and specifications. Each one is offering the pinnacle of Hi-RES audio performance and true audiophile quality.

DAP Name	Playback (h)  / Battery Capacity	Weight (g) / DAC Type	Bluetooth Specs. / DSD Rate	Memory In / Max	See Price
DAP Name	Playback (h)  / Battery Capacity	Weight (g) / DAC Type	Bluetooth Specs. / DSD Rate	Memory In / Max	See Price
iBasso DX340 Flagship DAP 150mm x 77.5mm x 19mm	11h 1200mW/32 Ω using Battery 2150mW/32 Ω using external 12v DC Supply 2100 mA/h+ 4000mA/h	486 g / 128 PWM Discrete DACs	BT 5.0 aptX HD / DSD512	Internal 256GB UFS 2.1 HS Memory, up to 2TB microSD	Pricing on Amazon.com Pricing on Amazon.CO.UK Pricing on AliExpress.com (1)
SHANLING M8T Flagship Tube DAP 147mm x 82mm x 22mm	15h with Headphones SE max 500mW/32 Ω SE / 13h with Headphones BAL max 1125mW/32 Ω BAL 8350mA/h	383 g / dual AKM AK4499 DACs,  dual AK4191EQ Delta Sigma Modulators,  dual   JAN6418 Tubes	BT5.0 aptX WiFi Dual Band / DSD1024	8GB RAM / internal 128GB Flash up to 2TB microSD	Pricing on Amazon.com Pricing on Amazon.CO.UK Pricing on AliExpress.com (2)
Astell&Kern A&norma SR35 DAP 108.3 × 64 × 16.1mm	20h with Headphones Normal SE 2.1V @ 32 Ω Normal BAL 4V @ 32 Ω   max Level SE 500mW+500mW @32 Ω max Level 1000mW+1000mW @32 Ω   3150mA/h	184 g / Quad CS43198	BT 5.0 aptX WiFi Dual Band DSD256	internal 64GB NAND Flash, up to 1TB microSD	Pricing on Amazon.com Pricing on Amazon.CO.UK Pricing on AliExpress.com (3)
FiiO M17 Portable Desktop-Class Music Player 156.4 x 88.5 x 28mm	10h with Headphones or BT   1.5W+1.5W@32Ω Battery   3W+3W@32Ω DC Dock Mode   9200 mA/h	610 g / Dual  ESS  ES9038PRO	BT 5.1 aptX DSD512	internal 64GB, up to 2TB microSD	Pricing on Amazon.com Pricing on Amazon.CO.UK Pricing on AliExpress.com (4)
Astell&Kern A&Ultima SP4000 // PPF51 149.8mm x 85mm x 19.5mm	10h SE 10h BAL   max out level SE 4.1V/no load 500mW+500mW@32Ω   max out level BAL 8.2V/no load 1880mW +1880mW@32Ω   6780mA/h	615 g / Quad AKM4499EX DACs 4x  AKM4191EQ	BT 5.0 aptX-HD Dual Band Wi-Fi  / DSD512	internal 256GB NAND, up to 1.5TB microSD	Pricing on Amazon.com Pricing on Amazon.CO.UK Pricing on AliExpress.com (5)

 

1.) iBasso DX340 Flagship DAP – HiFi Hi-RES Digital Audio Player,

2.) SHANLING M8T Flagship Tube DAP – HiFi Hi-RES Digital Audio Player,

3.) Astell&Kern A&norma SR35 DAP – HiFi Hi-RES Digital Audio Player,

4.) Fii0 M17 DAP – HiFi Hi-Res Digital Audio Player,

5.) Astell&Kern A&Ultima SP4000 DAP – HiFi Hi-RES Digital Audio Player,

Link to Cross-reference TABLE 1.

 

 

1/5 – iBasso DX340 REFERENCE Flagship DAP

PIC 1. iBasso DX340 Flagship DAP – Silver

 

1. iBasso DX340 Flagship DAP – Key Features:

• Qualcomm Snapdragon 665 Processor (11nm)
• Proprietary FPGA-Master 3.0
• Mango Linux OS and Android 13 – Dual System
• Dual Battery Architecture (2100mA/h + 4000mA/h)
• THD+N as low as -119dB
• Two Accusilicon fs Oscillators (45.1584MHz, 49.152MHz)
• Replaceable AMP card design – Using Amplification Modules AMP15 – Basic, AMP16 – Tube Hybrid
• 12V External Power Supply Support
• Recommended Item

---

• Solid Metallic 316 Stainless Steel Chassis
• 6.0-inch 1080P in-cell capacitive touch AMOLED Display ( 1080 x 2160 pixels )
• Two Rechargeable Li-Polymer batteries, 3.2V, (2100mA/h and 4000mA/h) working together, Charging time up to 2.5h
• Wireless :
  • Streaming with Wi-Fi (802.11a/b/g/n/ac),
  • Bidirectional Bluetooth V5.0 supports (aptX HD, LDAC)
• Hardware DAC:
  • Discrete DAC, consisting of 16 sets of cascaded 8E PWM-DAC, 
  • Top-tier UCB Receiver allows this Flagship DAP to work as a USB DAC up to 32 bit/768kHz
• USB DAC:
  • USB-C 3.1 allows using the DAP as a USB DAC or audio out, but DAC mode must be enabled via Mango OS,
  • USB DAC mode supports PCM 32-bit/768kHz,
  • Native DSD512
• Qualcomm Snapdragon 665 Processor
• Memory Options: 
  • The system has 8 GB RAM and an internal 256GB Flash, and the user can update the micro SD card up to 2TB
  • The Memory Space is Limited to 2TB or approximately 2400 full albums in FLAC format.
• Original Firmware Updates – link
• Replaceable AMP card Design:
  • AMP15 – Standard Amp Option with IC BUF643A x8
• Supported Audio File Format:
  • MP3 8-48kHz, 16bits,
  • AAC 8-96kHz, 16bits,
  • FLAC 8-192kHz 16,24bits,
  • APE 8-192kHz 16, 24bits,
  • WAV/PCM 8-192kHz 8, 16, 24, 32 bits,
  • WMA 8-96kHz 16, 24bits,
  • AIFF 8-192kHz 8, 16, 24, 32bits,
  • ALAC 8-192kHz 16, 24bits,
  • IMA/MS-ADPCM 8-48kHz 8, 16bits, 
  • DSF 2822.4kHz 1bit, 
  • DFF 3072kHz 1bit,
  • OGG, DXD, DST
• Single Full Charge ensures Playback Duration approx 11h, depending on the sampling rate and the type of media file
• Connectors:
  • microSD Card Slot – Up to 2TB Size,
  • Flexible output functions – Headphones and AUX Cable,
  • 3.5mm jack for SE Headphones x1, 
  • 4.4mm jack for BAL Headphones x1, 
  • USB-C 3.1 slot for USB-OTG, USB DAC, and charging x1.
• Batteries: 
  • Type: Li-Polymer Batteries,
  • Nominal Voltage: 3.8V 
  • Capacity:
    • Battery#1:  2100mA/h,
    • Battery#2:  4000mA/h.
• Battery Charging:
  • Using USB-C input, 
  • Charging Time – Up to 2.5Hours.
• THD+N:  -119dB, A-weighting, 600 Ohms Load
• THD+N:  -117dB, A-weighting, 300 Ohms Load
• THD+N:  -106dB, A-weighting, 32 Ohms Load
• SNR: 123dB@1KHz, ± 2dB
• Crosstalk -140 dB
• Frequency Response Range: 
  • 10Hz-22KHz -0.7dB
  • 10Hz-40KHz -2.2dB
• Nominal Impedance: 
  • 8 to 150 Ω,
• Headphone Port:
  • 3.5mm jack SE, 
    • Max Output (4.2V_RMS) 550 mW+550 mW  @32 Ω  ( Single-Ended ), when using the 12V DC-IN “Super Gain” mode,
    • Max Output (3.16V_RMS) 312mW+312mW @32 Ω (Single-Ended) – Battery Powered
  • 4.4mm jack BAL, 
    • Max Output (8.3V_RMS) 2150 mW+2150 mW @32 Ω ( Balanced ), when using the 12V DC-IN “Super Gain” mode,
    • Max Output (6.3V_RMS) 1200 mW+1200 mW @32 Ω  ( Single-Ended ) – Battery Powered
• Dimensions:  
  • 150mm x 77.5mm x 19mm,
• Weight: 
  •  486 g.

User Guide PDF File

Device Review on Head-fi.org

Basic Information from iBasso-shop.eu

Where to Buy:

Pricing on Amazon..

---

 

 

2/5 SHANLING M8T Flagship Tube DAP

PIC 2. SHANLING M8T Flagship Tube Dap

 

2. SHANLING M8T Flagship Tube DAP – Key Features:

• Qualcomm Snapdragon 665 Processor
• Dual AKM AK4499 DACs
• DSD1024 digital decoding
• Dual AK4191EQ Delta Sigma Modulators
• Dual JAN64138 Tubes
• Only 3 seconds for the Tube Mode to be active
• Amplifier  ADI AD45253, OPA1612,  ADIAD8397
• XMOS HU316 HiFi USB Input
• Two KDS active crystal oscillators clocked at 90.3168MHz and 98.304MHz
• Recommended Item

---

• Solid Metallic Body from magnesium-aluminum alloy, CNC finish
• 6-inch Touch-sensitive Display ( 2160 x 1080pixels ),
• Rechargeable Li-Ion battery 3.8V, 8350 mA/h,
• M8T supports QC3.0 and PD2.0 for 18W charging,
• Bidirectional Bluetooth V5.0 (Support LDAC, SBC, and AAC Codecs)
• Hardware DAC:
  • DAC TYPE: Dual AKM AK4499 DACs
  • LOW Power using Hardware, 
• Memory Options:
  • The system has 8 GB RAM and an internal 128GB Flash, and the user can update the micro SD card up to 2TB
  • The Memory Space is Limited to 2TB or approximately 2400 full albums in FLAC format.
• Supported Audio File Format:
  • DSD (“.iso”,”.dsf”,”.dff”)
  • ISO, DXD, APE,
  • FLAC, WAV, AIFF, AIF, DTS,
  • MP3, WMA, AAC, OGG, ALAC,
  • MP2, M4A, AC3, M3U, M3UB, OPUS,
  • Hi-RES Support PCM 768kHz / 32bit & DSD1024,
  • USB DAC Support PCM768kHz / 32bit, DSD512
• Single Full Charge ensures Playback Duration approx 13-15h, depending on the sampling rate and the type of media file
• Connectors:
  • microSD Card Slot – Up to 2TB Size,
  • 3.5mm jack for SE Headphones x1, 
  • 4.4mm jack for BAL Headphones or Line Audio Out x1, 
  • USB-C charging connector, USB DAC x 1.
• Battery: 
  • Type: Li-ion Battery,
  • Nominal Voltage: 3.8V,
  • Capacity:  8350 mA/h
• Battery Charging:
  • Using USB-C input
• 3.5mm Output (Transistor Mode)
  • Output Power:
    • Low Gain: 31mW / 1V@32Ω,
    • Medium Gain: 125mW / 2V@32Ω,
    • High Gain: 500mW / 4V@32Ω,
  • THD+N: <0.0007%,
  • SNR 124dB@1KHz, ± 2dB,
  • Dynamic Range 124dB,
  • Channel Separation: 75dB@32Ω,
  • Noise floor > 117dB (Low Gain),
  • Frequency Response Range:  20Hz-40KHz (0.2dB),
  • Nominal Impedance: 8Ω to 150Ω,
  • Output Impedance: <1Ω,
• 3.5mm Output (Tube Mode)
  • Output Power:
    • High Gain: 420mW / 3.7V@32Ω,
  • Frequency Response Range:  20Hz-40KHz (0.2dB),
  • SNR 120dB@1KHz, ± 2dB,
• 4.4mm Output (Transistor Mode)
  • Output Power:
    • Low Gain: 125mW / 2V@32Ω,
    • Medium Gain: 500mW / 4V@32Ω,
    • High Gain: 1125mW / 6V@32Ω,
  • THD+N: <0.0005%,
  • SNR 127dB@1KHz, ± 2dB,
  • Dynamic Range 127dB,
  • Channel Separation: 115dB@32Ω,
  • Noise floor > 114dB (Low Gain),
  • Frequency Response Range:  20Hz-40KHz (-0.2dB),
  • Nominal Impedance: 8Ω to 150Ω,
  • Output Impedance: <1Ω
• 4.4mm Output (Tube Mode)
  • Output Power:
    • High Gain: 950mW / 5.5V@32Ω,
  • Frequency Response Range:  20Hz-40KHz (-0.2dB),
  • SNR 123dB@1KHz, ± 2dB,
• Headphone Port:
  • 3.5mm jack SE Output,
  • 4.4mm jack BAL Output,
• Dimensions:  
  • 147mm x 82mm x 22mm,
• Weight: 
  •  383 g.

A leather case provides additional protection for the tubes.
Case available in red or black versions.

Official Site information

Shanling M8T Review on Headfonics.com

Shanling M8T  – Manual / Quick Guide (Combined – Have English Info), USB Driver, Firmware V1.36 or latest

Where to Buy:

Pricing on Amazon..

Pricing on AliExpress..

---

 

 

 

3/5 Astell&Kern A&norma SR35 DAP

 

PIC 3. Astell&Kern A&norma SR35

 

3. Astell&Kern A&norma SR35 DAP – Key Features:

• Quad-DAC (Quad/Dual Switching Mode)
• New Generation AMP Technology
• 2-Step Gain Mode
• NEW UI/UX – Crimson Theme
• Dual Band Wi-Fi (2.4 & 5 GHz)
• 20-hour continuous playtime
• Supports two-way Bluetooth V5.0 ( AVRCP, LDAC, aptX™ HD, A2DP )
• DSD256 (1 bit/11.2MHz) Stereo
• PCM (8-384kHz/8-32bit)
• Roon Ready (First in A&norma series)
• Recommended Item

---

• Solid Metallic Body, Aluminium and Steel,  
• 3.6-inch full-touch IPS Color Display (720 x 1280 pixels),
• Rechargeable Li-Pol battery, 3.8V, 3150mA/h, ~2,5 hours for full charge. (5V 2A General Charging)
• Bidirectional Bluetooth V5.0,  LDAC, aptX™ HD, A2DP, AVRCP
• Body Color: Charcoal Gray
• Hardware DAC:
  • DAC TYPE: Cirrus Logic – CS43198, Quad DACs
    • DAP can switch between Dual and Quad Mode,
  • LOW Power using Hardware.
• Memory Options: 
  • Digital Audio Player has an internal 64GB NAND Flash Memory.
  • The user can expand the internal memory space up to 1TB via an external microSD card.
  • The Memory Space is Limited to 1TB or approximately 1200 full albums in FLAC format.
• Supported Audio File Format:
  • WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
  • PCM 8 – 384kHz 8,16,24,32bits per Sample
  • DSD 64 (1bit, 2.8MHz), DSD128 (1bit, 5.6MHz), DSD256 (1bit, 11.2MHz)
• Single Full Charge ensures Playback Duration approx 20h with:
  • Standard FLAC,
  • 16-bit / 44.1kHz,
  • Normal Gain,
  • Unbalanced Output,
  • Volume at 50%,
  • LCD Off,
  • Dual DAC Mode.
• Connectors:
  • microSD Card Slot – Up to 2TB Size x 1,
  • 2.5mm jack for BAL Headphones x 1,
  • 3.5mm jack for SE Headphones x1, 
  • 4.4mm jack for BAL Headphones or Line Audio Out x 1, 
  • USB-C charging connector, USB DAC x 1.
• Battery: 
  • Type: Li-Polymer Battery,
  • Nominal Voltage: 3.8V, 
  • Capacity:    3150mA/h
• Battery Charging:
  • Using USB-C input, 
• AUDIO Specifications:
  • Unbalanced, SE:
    • THD+N: <0.0005%
    • SNR: 127dB@1KHz, ± 2dB
    • Frequency Response Range: 
      • 20Hz-20KHz ±0.012dB,
      • 20Hz-70KHz ±0.125dB.
    • Crosstalk: -133 dB@1kHz,
    • IMD SMPTE:
      • 0.0002% (800Hz – 10kHz) / 4:1 Unbalanced,
    • Output Power: up to 500+500mW @32 Ω
    • Output Impedance:
      • 1.1 Ω, 
    • Nominal Impedance: 
      • 8 to 150 Ω,
    • Headphone Port:
      • 3.5mm jack,
  • Balanced, BAL:
    • THD+N: <0.0006%
    • SNR: 130dB@1KHz, ± 2dB
    • Frequency Response Range: 
      • 20Hz-20KHz  ±0.011dB
      • 20Hz-20KHz  ±0.126dB.
    • Crosstalk: -145 dB@1kHz,
    • IMD SMPTE:
      • 0.0002% (800Hz – 10kHz) / 4:1 Balanced,
    • Output Power: up to 1000+1000mW @32 Ω
    • Output Impedance:
      • 2.7 Ω, 
    • Nominal Impedance: 
      • 8 to 150 Ω,
    • Headphone & Line Out Port:
      • 2.5mm jack, 
      • 4.4mm jack. 
• Operating Temperature:
  • 0℃ ~ + 40℃,
  • 32℉ ~ 104℉.
• Dimensions:  
  • 108.3 × 64 × 16.1 mm.
• Weight: 
  • 184 g.

 

User Guide PDF File

Device Review on WhatHifi.com

Official Information

Where to Buy:

Pricing on Amazon..

Pricing on Aliexpress..

---

 

 

 

4/5 Fiio M17 Flagship DAP

PIC 4. Fiio M17 Flagship DAP

 

4. Fiio M17 Flagship DAP – Key Features:

• DACs: 2x ESS ES9038PRO
• Soc: Snapdragon 660
• AMP: THX AAA 788+
• USB DAC: up to 768kHz-32bit/DSD512
• More stable and higher quality Bluetooth V5.1, Qualcomm chip QCC5124
• Rechargeable Li-Ion battery, 3.7V,  9200 mA/h
• USB: XMOS XUF208
• NDK – Femtosecond Crystal Oscillator x 2
• Recommended Item

---

• Solid Metallic Aluminium/Steel Body,
• 5.99-inch In-cell FHD+ IPS Color Display ( 1080 × 2160 pixels), 18:9 ratio, 403ppi  
• Rechargeable Li-Ion battery, 3.7V,  9200 mA/h  for full charge ~4–4.5 h ,  QC3.0 + PD supported
• Bidirectional Bluetooth 5.1 Transmission, Qualcomm QCC5124 chip,  LDAC, aptX, aptX-HD, SBC, HWA
• Hardware DAC:
  • DAC TYPE: Dual ESS ES9038PRO,
  • LOW Power using Hardware
• Soc: Snapdragon 660
• Memory Options: 
  • Digital Audio Player has 4GB RAM and an internal 64GB NAND Flash Memory.
  • The user can expand the internal memory space up to 2TB via an external microSD card.
  • The Memory Space is Limited to 2TB or approximately 2400 full albums in FLAC format.
• Supported Lossless Audio File Format:
  • DSD: DSD64/128/256（“.iso”,“.dsf”,“.dff”,
  • DST iSO,
  • DXD: 352.8kHz/24bit,
  • APE FAST / High / Normal: up to 384kHz/24bit,
  • APE Extra High: up to 192kHz/24bit,
  • APE Insane: up to 96kHz/24bit,
  • Apple Lossless: up to 384kHz/32bit,
  • AIFF: up to 384kHz/32bit,
  • FLAC: up to 384kHz/32bit,
  • WAV: up to 384kHz/32bit,
  • WMA LOSSLESS: up to 96kHz/24bit,
• Supported Lossy Audio File Format:
  • MP3, OGG, WMA, AAC, etc.   
• Single Full Charge ensures   
  • SE Output, Playback Duration of more than 10h
    • Test File: MP3, 44.1kHz/16-bit,
    • Volume: 76,
    • Gain: Low,
    • Screen: off,
    • EQ: off,
    • Load: 32 Ω.
  • BAL Output:   Playback Duration of more than 8h
    • Test File: MP3, 44.1kHz/16-bit,
    • Volume: 65,
    • Gain: Low,
    • Screen: off,
    • EQ: off,
    • Load: 32 Ω.
• Connectors:
  • MicroSD Card Slot – Up to 2TB Size,
  • Flexible output functions – Headphones and AUX Cable,
  • 2.5mm jack BAL x 1,
  • 3.5mm jack SE for Headphones with shared Line Out Function x 1, 
  • 4.4 mm jack BAL for Headphones  with shared Balanced Line Out  x 1, 
  • 6.35mm jack SE, TRS (Additional)
  • RCA Socket – COAXIAL  Output,
  • USB-C slot for charging, Two-way Type-C USB3.0（Charging/Data transmisson)，USB HOST Type-C USB2.0,
  • POWER-IN DC-12V.
• Battery: 
  • Type: Li-ion Battery,
  • Nominal Voltage: 3.7V,
  • Capacity:    9200mA/h
• Battery Charging:
  • Using USB-C input,
  • Power supply Supports QC3.0, QC4.0 and PD2.0 and PD3.0 fast charge,
  • POWER IN DC 12V 
• Channel balance: 
  • L20~R20（0.5dB / level）
• Gain Control:
  • Low,
  • Medium,
  • High,
  • Over-ear headphone mode,
  • Enhanced over-ear headphone mode – connected to external DC-12V.
• For additional info, see the Full Official data
• Power Output Parameters ( OEH Mode / Over-Ear-Headphone Mode):
  • Output Power: ≥500mW（32Ω /THD+N＜1%),
  • Noise Floor: ≤3.5μV（dBA),
  • Crosstalk: ≥75dB（1kHz/32Ω),
  • THD+N ≤0.0007%（1kHz/32Ω),
  • SNR ≥120dB（dBA),
  • Peak output voltage: 11.3 Vp-p.
• Power Output Parameters ( EOEH Mode / Enhanced Over-Ear-Headphone Mode ):
  • Output power ≥1.1W（32Ω /THD+N＜1%),
  • Noise floor ≤3.5μV（dBA),
  • Crosstalk ≥75dB（1kHz/32Ω),
  • THD+N ≤0.0009%（1kHz/32Ω),
  • SNR ≥122dB（dBA).
• Line Output Parameters:
  • THD+N ≤0.0006%（1kHz/10kΩ),
  • Crosstalk ≥103dB（1kHz/10kΩ),
  • SNR ≥120dB（dBA),
  • Noise floor ≤2μV（dBA),
  • LO Output Level 1.9V（1kHz/10kΩ).
• Power Output BALANCED Output Parameters ( OEH Mode / Over-Ear-Headphone Mode ):
  • Output power ≥3W（32Ω /THD+N＜1%),
  • Noise floor ≤7μV（dBA),
  • THD+N ≤0.0007%（1kHz/32Ω),
  • Crosstalk ≥108dB（1kHz/32Ω),
  • SNR ≥121dB（dBA).
• Power Output BALANCED Output Parameters ( Enh. OEHM – Enhanced Over-Ear-Headphone Mode ):
  • Output power ≥3W（32Ω /THD+N＜1%),
  • Noise floor ≤7μV（dBA),
  • THD+N ≤0.0009%（1kHz/32Ω),
  • Crosstalk ≥108dB（1kHz/32Ω),
  • SNR ≥121dB（dBA).
• Line Output BALANCED Output Parameters (dBA)
  • THD+N ≤0.0006%（1kHz/10kΩ),
  • Crosstalk ≥105dB（1kHz/10kΩ),
  • SNR ≥122dB（dbA),
  • Noise floor ≤3μV（dbA),
  • LO Output Level 3.9V（1kHz/10kΩ).
• Frequency Response Range:
  • 5Hz – 80KHz (-3dB)
• Max Output Power:
  • Battery Mode ~1.5W+1.5W@32Ω,
  • DC-Mode (Dock) 3W+3W@32Ω.
• Output Impedance:
  • SE Output: < 1 Ω (to 32Ω load)
  • BAL Output <2 Ω (to 32Ω load)
• Nominal Impedance:
  • 16 to 150 Ω SE Output,
  • 16 to 300 Ω BAL Output.
• Headphone Port:
  • 3.5mm jack,
  • 4.4mm jack,
• Dimensions:
  • 156.4 x 88.5 x 28mm
• Weight:
  •  610 g.

Official Information

Device Review on Headfonics.com

Where to Buy

Pricing on Amazon.com..

Pricing on Amazon.CO.UK..

Pricing on AliExpress.com..

---

 

 

 

5/5 Astell&Kern A&Ultima SP4000 DAP

PIC 5. Astell&Kern A&Ultima SP4000 (PPF51) DAP

5. Astell&Kern A&Ultima SP4000 DAP – Key Features:

• SoC Snapdragon 6125 (octa-core)
• Octa audio architecture:  AKM4499EX x 4 
• Premium Digital delta-sigma Modulator:  AK4191EQ AKM4191 (7-bit Stereo) x 4 
• Decoding PCM up to 768kHz/32bit и DSD512
• Bluetooth 5.0 with support for Qualcomm® aptX™ HD
• Wifi Dual Band  (802.11 a/b/g/n/ac (2.4/5GHz)
• Recommended Item

---

• Premium 904L stainless steel frame, special ceramic back
• 6.0-inch FHD+ touch-sensitive Color Display ( 2160 × 1080pixels )
• Rechargeable Li-Polymer battery, 3.8V,  6780 mA/h for full charge ~5 h (QC3.0 charging).
• Bluetooth V5.0 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC, LHDC, SBC, AAC)
• Firmware Updates: Wi-Fi Update / OTA (Over-the-Air),
• Hardware DAC:
  • DAC AKM4499EX x 4 – Flagship DAC,
  • AKM4191EQ  x 4 – Premium Digital delta-sigma Modulator,
  • LOW Power using Hardware, 
• Processor:
  • SoC Snapdragon 6125 (octa-core)
• Memory Options: 
  • Digital Audio Player has 8GB DDR4 RAM and an internal 256GB NAND Flash Memory.
  • The user can expand the storage space up to 1.5TB via an external microSD card.
  • The Memory Space is Limited to 1.5TB or approximately 1800 full albums in FLAC format.
• Supported Audio File Format:
  • WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
• Sample rates: 
  • DSD: DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo,
  • DSD256 (1bit 11.2MHz), Stereo / DSD512 (1bit, 22.4MHz), Stereo
  • PCM: 8kHz ~ 768kHz / 8, 16, 24, 32-bit 
• Single Full Charge ensures Playback Duration approx 10h, depending on the sampling rate and the type of media file:
  • Standard FLAC,
  • 16bit /44.1kHz,
  • Volume level: 50%,
  • Display: Off.
• Connectors:
  • microSD Card Slot – up to 1.5TB storage size x 1,
  • Flexible output functions – Headphones and AUX Cable,
  • 3.5mm SE jack for Headphones and Line Out SE x 1,  
  • 4.4mm BAL jack for Headphones and line Out BAL  x 1,
  • USB-C connector for charging, USB Digital Out x 1.
• Battery: 
  • Type: Li-Polymer Battery,
  • Nominal Voltage: 3.8V,
  • Capacity:  6780 mA/h.
• Battery Charging:
  • Using USB-C input, 
  • Full charge ~5 h (QC3.0 charging).
• THD+N: 0.0005% @ 1kHz, Unbalanced;  0.0003% @ 1kHz, Balanced
• SNR:
  • 129dB @ 1kHz, Unbalanced,
  • 131dB @ 1kHz, Balanced
• Crosstalk:
  • -136dB @ 1kHz, Unbalanced,
  • -145dB @ 1kHz, Balanced.
• Clock jitter:  25pS , (typical)
• Reference Clock jitter:  max 0.2 pS (200 fS)
• IMD ( Intermodulation Distortion ) SMPTE – SE & BAL:
  • 0.0004% , 800Hz – 10kHz (4:1),
• Frequency Response Range: 
  • (20Hz – 20KHz) ±0.006dB
  • (20Hz – 70kHz) ±0.06dB
• Output Impedance: 
  • Unbalanced Out 3.5mm: 0.7Ω
  • Balanced Out 4.4mm: 1.7Ω
• Output Levels:
  • SE:
    • max 4.1Vrms (no load), 
    • max 4V@32Ω or 500mW+500mW@32Ω
  • BAL:
    • max 8.2Vrms (no load),
    • max 7.76V@32Ω or 1880mW +1880mW@32Ω
• Nominal Impedance: 
  • SE: 8 to 150 Ω,
  • BAL: 8 to 300 Ω.
• Headphone Port:
  •  3.5mm jack,
• Dimensions:  
  • 3.36 x 2.56 x 0.6 inches
• Weight: 
  •  615 g.

Official Information

Device Manual – PDF

Downloads – Firmware V1.02 or latest, Software & Driver, Manuals

Device Review on WhatHifi.com

Where to Buy

Pricing on Amazon

---

 

 CONCLUSION

 

  Top 5 Audiophile HiFi Hi‑RES DAPs up to date of 2025

  These five flagship DAPs represent the pinnacle of portable audio performance in 2025, offering uncompromising sound quality, advanced features, and premium design. Choosing the right device depends on your personal priorities: portability, sound signature, additional features, and budget.

1. iBasso DX340 – Best for flexibility and customization. Dual OS mode, removable amplifier cards, and extensive format support make it ideal for audiophiles who want a fully versatile device that adapts to different listening preferences.
2. Shanling M8T – Perfect for those who enjoy the warmth of tube amplification in a portable form. Combines high-end analog character with modern digital features, ideal for listeners who value tonal richness and a unique sound signature.
3. Astell&Kern A&norma SR35 – Great balance of premium sound and compact portability. Its quad-DAC system and dual gain control provide high-resolution audio in a small, elegant package, perfect for on-the-go listening without compromise.
4. FiiO M17 – A “desktop-class” portable player. Heavy and feature-rich, it’s more suited for home or stationary use, offering extreme performance, dual ES9038PRO DACs, and THX AAA amplification for serious audiophiles.
5. Astell&Kern A&Ultima SP4000 – The ultimate flagship for uncompromising audiophiles. True quad-DAC architecture, massive format support, and a luxurious stainless-steel chassis deliver the absolute best sound quality, designed for those willing to invest in peak performance.

Key Takeaways:

• Portability vs. performance: Smaller models like the SR35 or Shanling M8T excel in portability, while the M17 and SP4000 prioritize top-tier sound.

• Sound signature: Tube output (M8T) vs. precise, neutral DACs (DX340, SP4000) — choose based on your tonal preference.

• Feature set: From removable amps and dual OS (DX340) to massive DSD/PCM support (SP4000), these devices offer specialized functions for serious listening.

All five models represent the highest standard in Hi‑RES portable audio for 2025. Select the one that best aligns with your listening style, usage environment, and budget, and you will experience the pinnacle of audiophile sound in a portable form.

 

1.) iBasso DX340 Flagship DAP – HiFi Hi-RES Digital Audio Player,

2.) SHANLING M8T Flagship Tube DAP – HiFi Hi-RES Digital Audio Player,

3.) Astell&Kern A&norma SR35 DAP – HiFi Hi-RES Digital Audio Player,

4.) Fii0 M17 DAP – HiFi Hi-Res Digital Audio Player,

5.) Astell&Kern A&Ultima SP4000 DAP – HiFi Hi-RES Digital Audio Player,

Link to Cross-reference TABLE 1.

 

 Designed by Professionals for Audiophiles

 Category:   Hi-RES Audio