ADON HD-600 is a commemorative model for the 25th anniversary of ADON. The selection of parts and materials is quite unique, which fulfills a popular saying: don’t use the most expensive, only use the best.
Since the HD-600 integrates three different audio sources and digital decoding, in order to make the quality of the three decodings consistent, the selection of parts is quite particular.
First of all, the DA conversion of the CD servo uses ESS’s ES9038Q2M, another feature is the extremely high spatial reproducibility. Its digital conversion rate is 32bit, the highest sampling rate is 768KHz, and it can decode DSP256/DoP or native DSD1024; and it has a dynamic range of up to 128dB and a THD+N of -120dB. The DAC is good at high-resolution playback, with clear sound contours and a wide dynamic range to enhance even the weakest sounds.
At the same time, , it is specially configured with a 100MHz American Crystek femtosecond clock with a phase noise as low as -166dB in order to maximize the potential of ES9038Q2M.

Bluetooth 5.1 uses Qualcomm dual-mode QCC3031 module, which is a pure high-resolution Bluetooth module that can decode aptX, aptX HD, aptX Low Latency, SBC, and AAC lossless formats.
The conversion rate is 24bit; the sampling rate is 48KHz, and the longest transmission distance is about 35 meters.

XMOS XU208 asynchronous USB solution as an interface for computer music playback. XU-208 also supports coaxial and optical fiber, DOP64 IIS native (native) DSD 256 output digital interface of the new generation XMOS XU208 solution, higher operating memory than the previous generation U8, so that XMOS audio has risen to a new level (XU208 memory Body 1000MIPS, U8 only 500MIPS).

The filter circuit on the circuit uses a large number of WIMA red capacitors, and specially selects Sanken’s 2SC6011A+2SC5171 with RUBYCON electrolytic capacitors to create a body-experienced two-way post-amplification combination, which once again presents a classic similar to the old AB machines in the 1970s. The sound is layered and warm.
The booster IC is LM4702; and the preamplifier uses the combination of OPA1602 and LM4562, which is popular with players, to bring full primary amplification.
It is worth mentioning that the headphone amplifier circuit uses TPA-6120 amplifier IC, the chip with the lowest noise floor. Due to the high density, the IC integrates many internal circuits, which simplifies the peripheral circuits. Noise, that is, it is indistinguishable between power on and power off! Even with high-end 8-ohm in-ears, our human ears can’t hear the noise, and the indicators can be seen by instrument measurement is amazing.
TPA-6120 is a monitoring style, which restores the original sound, which is more suitable for music production, recording monitoring, or friends who like the original taste of music!