Oppo HA-1 Headphone Amplifier

Oppo HA-1 Headphone Amplifier US$ 1,199.00

Discrete Class A Balanced Headphone Amplifier
Asynchronous USB DAC Up to 384 kHz and DSD256
Stereo Pre-Amplifier with Home Theater Bypass
Compatible with iPod/iPhone/iPad and Bluetooth
Bluetooth also supports the APTX codec.
A remote control app is available for both Apple's iPhone and Android-based smartphones.

Inputs
Analog inputs: RCA/XLR

Digital inputs:
Coaxial, Optical, AES/EBU 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz with 16/24 bit word length
USB:
Stereo PCM:
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz
16-bit, 24-bit, 32-bit word length
Stereo DSD (DoP v1.1 or native)
2.8224 MHz (DSD64), 5.6448 MHz (DSD128), 11.2896 MHz (DSD256, native mode only)

Mobile USB Audio Input (USB A Type)
Stereo PCM 44.1 kHz, 48 kHz

Profile USB 2.0, USB Audio 2.0 (driver for Windows available)

Bluetooth 2.1+EDR
Profile: iAP, SPP, AVRCP, A2DP
Audio: SBC, aptX


Outputs
Analog output: XLR/RCA

Headphone output: Jack (0.7 Ohm), 4 pin XLR (symmetrical, 0.5 Ohm)

Hegel Super headphone amplifier

Digital inputs: USB micro
Outputs: mini-jack (analog) + optical mini-jack (digital)
USB interface: up to 24 bit / 96 kHz, plug & play
Noise floor: -140dB
Output impedance: Below 1 ohm
Dimensions: 1,6 cm x 4,1cm x 8,2cm / 0.6” x 1.6” x 3.2” (HxWxD)

Website: Hegel
Price: $399

Audioengine D3

24 bit / 96 kHz DAC with asynchronous USB input and headphone out.

• Full-scale output 2.0V RMS
• Frequency response 10Hz - 25kHz (+/- 0.5dB)
• SNR (DC to 20kHz) 110dB
• THD+N (1kHz FS 96 kS/s) <0 .002="" li="">
• Crosstalk -110dB
• USB transfer mode Asynchronous (dual clock)
• USB device class Type 1.1 or above
• Input USB Audio Input bit depth up to 24 bits (upsampled)
• Input data rate up to 192KS/s (96K native)
• Output Analog audio mini jack
• Output impedance 10 ohms
• Suggested headphone impedance 12 ohms to 10Kohms
• Headphone amplifier LME49726
• D/A converter AKM4396
• USB controller TI1020B
• Power requirement USB 5V DC, 200mA
• USB power filtering 2-stage redundant regulation
• Product dimensions 19x12x6mm (including USB connector)

Website Audioengine
Price: $189.00

AMI MUSIK DDH-1

Pre-amp with analog, USB, Toslink and SPDIF input.
Analog line- and headphone out
Digital out (Toslink)

32-bit Texas Instruments PCM1795 DAC
XMOS-based asynchronous USB input 24-bit/192kHz
1/8" analog input couple to a AKM AK5386 AD converter (24-bit/96kHz) coupled with the amp and the Toslink output allowing for digitizing analog input.
USB input coupled with Toslink output ( USB to SPDIF conversion)



Website: AMI MUSIK DDH-1
Price: US$549

LH Labs Geek

Small portable USB DAC/headphone amp

• Two outputs on all types (2 x 3.5 mm jack): line and headphones, both are variable in digital domain (64bit precision)
• Volume control: two buttons and software (Operation System main volume slider sends volume data to Geek which implements the volume change in its internal volume control)
• Line-out output impedance: 47 Ohm (on all types)
• Headphone output impedance: 0.47 Ohm (on all types)
• Max output voltage (line-out and headphone): 2.65 Vrms (Geek), 3,4 Vrms (Super Geek), 4 Vrms (Super-Duper Geek)
• Max output power (headphone, 16 Ohm): 450 mW (Geek), 720 mW (Super Geek), 1000 mW (Super-Duper Geek)
• Native decoded  music format in PCM: 44.1, 48, 88.2, 96, 176,4, 192, 352.8, 384 kHz / 16, 24, 32 bits.
• Native decoded digital format in DSD: 2.822, 3.072, 5.644, 6.144 mHz / 1 bit
• "Class A" analogue output stage, THD+N better than 0.005 %, SNR is 103dB (none-weighted), 109dB (A-weighted)
• Sample rate indicator LEDs, machined aluminum enclosure in three different colors, with 6" USB cable, driver for PC (plug and play on MAC and Linux)

Website: LH Labs
Price: US$ 299

AURALiC Gemini 2000 headphone amp

DAC with a 2 Watt class A headphone amp build into a Klutz design headphone stand.

Output: 6.3mm jack / 4-pin XLR.

Input:
USB
Toslink
3.5 mm analog

Integrated SDXC card reader
File format: PCM 24/384, DSD128

Website: AURALiC
Price: US$1995

Meridian Explorer

Portable USB DAC with analog volume control on the headphone out, fixed line out combined with Toslink out.

Asynchronous 24/192 USB (XMOS) with driver for Windows.

Website: Meridian

Price: € 295 

Woo Audio WA7 Fireflies

Class-A tube headphone amplifier with asynchronous 24/192 USB Audio Class 2 input.

• C-Media 6631 USB chip
• TI PCM5102A 32-bit DAC chip
• Distortion: <0 .03="" li="">
• S/N: 95dB

Website Woo Audio
 Price: $999

iBasso D7

Portable USB DAC with volume control and headphone out.

- True 24Bit/192K USB-DAC, supports bit for bit decoding.
- Asynchronous USB transfer
- WM8740 DAC chip
- Up to 24Bit/192K coaxial output
- RCA output and Line out.
- Built-in +/- 5V class A headphone amplfier that run off of USB power
- Full aluminum case
- Measures 60W*93L*22H (mm), and weights 108g
- Comes with USB Cable, and Leather pouch

Price: US$ 179
Website

Cambridge Audio DacMagic Plus

• Twin Wolfson WM8740 24bit DACs used in dual differential configuration
• New Anagram Technologies ATF2™ 24-bit/384kHz audio up-sampling / jitter reduction
• Optional Digital Preamp mode allowing connection directly to power amp or active speakers
• 24-bit/96kHz driverless USB Audio 1.0
• 24-bit/192kHz USB Audio 2.0 with ASIO or kernel streaming modes.
• USB class 2 driver for Win
• Asynchronous USB transfer 
• Selectable digital filters - linear phase, minimum phase and steep
• Balanced XLR audio output and RCA phono output
• Two 24 bit digital inputs (with optical or coaxial for each)
• External input for optional BT100 Bluetooth receiver - allows audio to be streamed and up-sampled from any paired Bluetooth device

Price: £349.95

April Music Eximus DP1

DAC/Pre/Headphone amp

Digital Input:
1 USB 2.0 + driver for Win
USB receiver: XMOS (asynchronous USB audio class 2 24 bits/192 kHz)
1 I2S 100 Ohms TTL Level,
2 SPDIF coax 75 Ohms,
1 AES/EBU, 110 Ohms,
1 Toslink

Analog Input: 1 RCA, 1 MINI JACK
Analog Output: 1 RCA, 1 XLR, 1 Headphone

Receiver: Cirris Logic C58416
ASRC: TI SRC4192 (can be bypassed)
DAC: TI PCM1794A

Price: US$ $3,200
Website: April Music

Ubermuzik Tiny Tube DAC V2

USB receiver: Tenor TE7022L 24 bit / 96 kHz adaptive mode USB

DAC:  Cirrus Logic CS4398

Tube: Shuguang Psvane Series 12AT7-T

Output:

can drive 32-300 ohm headphones

RCA out

Price: US$ 225

Website: Audiohub

CYP AU-D160

USB DAC with analogue out (RCA), headphone out and Toslink.
Price: £150.00
Website: Cyp

• Supports standard sampling rates - 44.1kHz, 48kHz, 88.2kHz, 96kHz, 192kHz
• Supports Bits : 16 Bits / 24Bits
• Power supplied by USB BUS Power
• The Headphone, R/L and Optical ports will simultaneously support audio output
• ASIO driver supported
• USB Audio Class 2.0 with asynchronus mode and driver for Win
• 500 MIPS, 8 threads, XS1-L1 processor (XMOS)

Peachtree Audio Grand Pre control center

DAC/preamp/headphone amp with volume control and defeatable tubed output.
Price: US$2995

Website: Peachtree

Manufacturers description:

• Reference ESS Sabre32 DAC knocks jitter down to <1 picosecond for accurate sound reproduction
• Galvanic Isolation eliminates noise generated by switching power supplies in source components
• New asynchronous I2S 24/192 USB input provides the best connection between computer and DAC 
• VCA gain control for minimal noise and cross talk replaces the commonly used potentiometer 
• New Bascom King tube buffer rejuvenates poor recordings and compressed audio