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This Topping pack, consisting of the A90 Discrete headphone amplifier, the D90SE DAC and the TCX1 XLR cables. A perfect combo to enjoy a headphone listening solution of exceptional quality, ensuring notably a level of distortion and extremely low noise. The result is a sound reproduction of sublime richness, precision and musicality. The set is thought, both in its technical conception but also by its design, for a complementary use. The D90SE can also be used as a preamplifier in a home HiFi system, thanks to its RCA and XLR outputs.

The Topping A90 Discrete, an improvement of the previous A90, is now equipped with discrete components. Both a headphone amplifier and a preamplifier, it features a discrete NFCA amplifier stage capable of supporting the vast majority of headphones on the market. Its careful design using numerous high-end components allows it to deliver a rich, clear and transparent sound.
Key features:
The Topping D90SE is a high-end DAC, benefiting from an intelligent and careful design for high performance. It features an ESS ES9038Pro conversion chip, a USB XMOS interface and an Altera MAX II CPLD. The D90SE is also versatile with a complete connectivity and an integrated Bluetooth receiver.
Key features:


Topping's high quality TCX1 XLR cables feature 6N copper and silver-plated 6N copper conductors, ensuring perfect signal transmission. Each conductor has a cross section of 0.533mm² (19AWG). The contacts of the connectors are gold plated to maintain excellent conductivity while ensuring high resistance to oxidation. Each cable is covered with a beautiful and robust black and red braided nylon sheath.
Key features:
Technical characteristics
| Topping A90 Discrete specifications | |
|---|---|
| Product type | Headphone amplifier Preamplifier |
| Inputs | 1* Balanced stereo XLR 1* Single-ended stereo RCA |
| Outputs | 1* Single-ended Jack 6.35mm headphone output 1* Balanced Jack 4.4mm headphone output 1* Balanced 4 pins XLR headphone output 1* Single-ended stereo RCA pre-out 1* Balanced stereo XLR pre-out |
| Supply voltage | 100-240VAC 50/60Hz |
| Dimensions | 222*160*45mm |
| Color | Black |
| Topping D90SE specifications | |
|---|---|
| Product type | DAC |
| Inputs | 1* USB-B 1* AES/EBU 1* Coaxial 1* Optical Toslink 1* I2S LVDS via HDMI Bluetooth 5.0 |
| Outputs | 1* Stereo RCA 1* Stereo XLR |
| DAC chip | ESS ES9038Pro |
| USB interface | XMOS XU216 |
| Supported Bluetooth codecs | AAC, SBC, aptX, aptX LL, aptX HD, LDAC |
| Supported sampling rates | PCM up to 32bit 768kHz DSD up to DSD512 |
| Dimensions | 222*160*45mm |
| Color | Black |
| Topping TCX1 specifications | |
|---|---|
| Product type | Male/female XLR cables |
| Length | 25cm |
| Conductors material | 6N copper Silver plated 6N copper |
| Conductors section | 0.533mm² (19AWG) |
| Cable outer diameter | Ø8mm |
| Connectors contacts plating | Gold |
| Outer sheath | Braided nylon |
| Cable color | Black and red |
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