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  1. Features: 1.Output up to 3500mW×2 @ 16Ω and 2400mw×2 @ 32Ω 2.Touts a SINAD level of more than 125dB 3.NFCA(Nested Feedback Composite Amplifier) modules 4.Surpassing The Limits Of APX555B 5.3 Step Gain Settings the price is $139.99
  2. Hi I am sorry for that, no affilation for topping or hifigo, only entry level audiophile, sorry again
  3. Yes, but Topping DX7 Pro with 4.4mm balanced output and Bluetooth 5.0. so I like this one better
  4. Upgraded DAC Chips The dual ES9038 DAC chips on the original DX7s have been upgraded to one ES9038PRO DAC. The upgrade promises improved signal to noise ratio and reduced distortion. IIS input and 4.4mm balanced output Topping has also boosted its input IIS and 4.4mm balanced output as additions on DX7 pro comparing with DX7s. Latest Bluetooth 5.0 addition on Topping DX7 pro Topping has employed the Qualcomm Bluetooth 5.0 Soc CSR8675 on DX7 pro with LDAC transmission supported. CSR8675 is a premium tier single-chip solution delivering high quality wireless audio perf
  5. Fiio K5 pro from is a high-quality headphone amplifier and DAC with a DAC chip AKM AK4493EQ providing 32bit and VELVET sound level. The headphone amplifier K5 pro also utilizes an XMOS XUF208 USB chipset, which provides 768kHz/32bit and DSD hardware decoding. Features of FiiO K5 Pro: AK4493 DAC chip Output ports: 6.35mm/RCA Input Ports: USB/Coaxial/Optical/RCA Professional Audio Architecture USB DAC: 768K/32Bit,DSD512 Driving headphones with ease Professional Audio Architecture: LPF+Voltage Amplification+Current Driving Gain: High/Mid/Low RGB Indicator: Blue/Green/Y
  6. The QA390 is a mobile all-in-one machine powered by more than 10000mAH.Dual AK4497 DAC chip, ALL TO DSD mode, dual 1000000uF The balanced amp's highest output is close to 30V RMS The final stage power tube current output capability is 2700mAHeadphone interface: single-ended interface: 6.35, 3.5; balanced interface: 2.5, 3.5, 4.4, 4-core XLR. Built-in single-chip single-threaded SD card player, HWA (LHDC) HD Bluetooth inputdual USB interface All the way to the phone or tabletItalian interface, the connection to the computer phone tablet is excellent. Coaxial, fiber-optic input, as a DAC integr
  7. You can check this link: https://hifigo.com/collections/topping/products/topping-d50s-bluetooth-5-0-es9038q2m-audio-decoding-usb-dac and you can learn more from their website: http://www.tpdz.net/products_detail/productId=41.html Features: 1, Customized Thesycon driver + XMOS XU208 + 2 x ES9038Q2M + 2 x OPA1612. 2, Support Highest DSD512, PCM32bit/768kHz and DOP64.
  8. I think you can conside the topping DX50s, the latest from topping
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