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  • The Quloos QA390 is a hi-fi lossless music player, DAC, decoder, and headphone amplifier combined into an all-in-one mobile unit. It is powered by four 3300mAh Panasonic 18650 batteries that makes for a truly mobile hi-fi unit with 8-10 hours of high quality music listening.

  • The HP-A4BL High-Resolution DAC / Balanced Headphone Amplifier from Fostex is a high resolution digital-to-audio converter and balanced headphone amplifier well suited for professional audio engineers, mastering engineers, and audiophiles. The HP-A4BL supports PCM audio up to 24-bit/192 kHz and DSD audio up to 11.2 MHz
  • Taking into account all of the above, we come to the conclusion that the new Fostex HP-A8mk2 is a reasonable evolution of the initially successful product.The cost of the device is $ 1200, it is a worthy competitor of products that are in the same price category. The ability to use as a DAC, an upsampler and an amplifier for headphones make the Fostex HP-A8mk2 a “three in one” device. Modern DAC, support for all audio formats and natural sounding of the new USB-DAC Fostex deserve close attention of music lovers.
    • Hi-Res up to 32bit/768k and DSD512
    • Supports Apple / Android / PC
    • 400mA Battery up to 8 hours
    • Fuly Discrete Amp Circuit
    • No-screw Uni-Body-Design
  • EarStudio ES100 MK2

    Price $99.00
    •  DAC: Asahi Kasei AK 4375a × 2 
    •  Input: Bluetooth A2DP or USB DAC 
    •  USB DAC: USB Audio Class 1.0 (Up to 48 kHz / 16 bit)
    •  Output:  3.5 mm (Unbalanced) /  2.5 mm (Balanced / 4-Pin) 
    •  Output Level:  3.2 Vpp (Unbalanced) /  6.4 Vpp (Blanced) 
    •  Output Impedance: 1 Ω (Unbalanced / Blanced) 
    •  SNR:  109 dB (Unbalanced) /  110 dB (Blanced)
    •  Bluetooth Version: 5.0 
    •  Profile: HFP / HSP / A2DP / AVRCP / LDAC
    •  Corresponding Codec: aptX / aptX HD / AAC / SBC 
    •  Maximum Communication Distance: about 10 m
    •  Battery Capacity: 350 mAh (Lithium Polymer) 
    •  Continuous Playing Time: about 14 hours 
    •  Body Size: (W) 30 × (H) 53 × (W) 15 mm
    •  Body Weight: about 20 g
    • DAC chip: AK4377
    • Inputs: USB-C
    • Outputs (3.5 mm): Standard (0.914 Vrms), High Power (2.26 Vrms)
    • Output Impedance: < 1 Ω
    • THD + N (Standard): -105 dB (0.00056%)
    • THD + N (High Power): -102 dB (0.00079%)
    • Dynamic range (Standard): 118 dB
    • Dynamic range (High Power): 118 dB
    • Sample rates: Up to PCM 32-bit 384 kHz, DSD128 (DoP)
    • Desktop compatibility: Mac OS 10.10 or later, Windows 7 (32/64-bit) or later
    • Mobile compatibility: iOS 10.3.3, iPhone 6 or later, Android 6.0 or later
    • Dimensions: 1.8 x 1.3 x 0.3 in (4.5 x 3.2 x 0.8 cm)
    • Weight: 0.8 oz (21.5 g)
    • The new design SC-6LS MK2 deployed advanced vacuum tubes, coupling capacitor, carbon film resistor and a variety of high-class components. Effectively improved performance and audio quality. Collocated with 9084D MK2, creates the evolutionary home audio system concept.
    • Constructed linear amplifier circuit with FOUR Electro-Harmonix 12AU7EH Preamp Tubes.
    • Advanced rectifying circuit with TWO RCA 22DE4 Rectifiers.
    • Deploys Multicap Coupling Capacitors & Takman Carbon Film Resistors.
    • Designed for 15dB gain.
    • Customized EI-Core Power Transformers.
  • Topping DX7 Pro

    Price $600.00
    • ESS DAC ES9038PRO chip,with TOPPING elaborate design and adjustment,the distortion is <0. 00010%,DNR <126dB,and SNR <126dB.
    • CSR8675 chipset to support Bluetooth 5.0 and LDAC/AAC/SBC/APTX/APX LL/APX HD protocol. DX7 Pro could achieve 24bit 96KHZ HD transmission
    • XMOS XU208 and Thesycon customized driver(Win 7 and above)gives the DX7 Pro superior decoding capability on USB;PCM support up to 32bit 768KHZ and DSD support to DSD512(native).
    • USBIN: 44.1 kHz-768kHz/16bit-32bit DSD64-DSD512(Native). DSD64-DSD256(DOP)
    • OPT/AES/COAX: 44. 1kHz-192kHz/16bit-24bit, DSD64(DOP) 
    • IIS IN: 44.1kHz-768kHz/ 16Bit-32Bit、DSD64-DSD1024

    • The power of A50 is stabilized by the TI TPS7A33/47 low-noise linearregulator. It provides continuous pure power supply for A50.
    • Recommended to use with P50 linear powersupply for further improvement. Perfect match for power amplifier/active speaker. 15V output for A50,and the 5V outout for D50s so that to make a delicate system.
    • A50 digitizes the volume knob position, and transmits the data to RC1195 forecision volume controlling.
    • The two LME49720 OP-AMPS of A50 are equipped with socket for thoseexperienced Diyers to replace their desired DIP-8 OP-AMP so as to achieve different sound.
    • The outer casing is designed with the rmal conductive column to dissipate heat fromthe power supply and OP-AMP through the entire outer casing.
    • Full balanced + SE headphone output---A90 has three output headphone jacks of 4-pin-XLR,4.4 balanced and 6.35 SE to meet different usages.
    • A90 is provided with a wide range of adaptation to headphones.---The SE 25Vpp / balanced 49Vpp high output voltage along with high output current & less than 0.1 Ohm output impedance,
    • A90 is equipped with three gain settings of -9.5dB/ 0dB / 9.5dB for SE and -35dB / 6.0dB / 15.5dB for balanced. The noise of merely 0. 2uVrms makes A90 easily adapt to all types of headphones from extremely sensitive IEMs to most power demanding full sized over-ears.
    • It's a great companion of active monitors stacked with D90 DAC when A90 work as pre-amp application.
    • DAC + Pre-amp appplication