shenzhenaudio
Sponsor: Shenzhenaudio
As a star in the high-fidelity audio industry, TOPPING has consistently redefined expectations for precision sound engineering at accessible price points. Their latest breakthrough, the D900 DAC featuring the proprietary PSRM technology, marks another leap forward in digital audio conversion.
PSRM is a discrete 1-bit decoding architecture composed of an ultra-high-speed switching logic array and precision voltage references. After rigorously evaluating over 20 types of components and configurations, TOPPING selected a combination that delivers extremely fast response while preserving the integrity of the original signal. The component selection also minimizes interference with the power supply system, laying the foundation for exceptional performance.
The design of the voltage reference power supply is critical, as it directly determines the accuracy of the analog output. The digital switching logic operates at the nanosecond level. While these fast switches regulate current fluctuations, they can still affect the purity of the reference voltage element, which has a direct impact on distortion and noise. To address this, it has pioneered a stable, noise-free, purely resistive reference power design. This synergy between the reference power supply and switching logic enables the D900 to reproduce the original audio signal with astonishing fidelity, achieving harmonic distortion below 140dB and a SNR of 131dB.
Equipped with QCC5125 chip, D900 supports Bluetooth 5.1 and can support up to 96kHz/24bit. Also it fully supports LDAC/aptX-Adaptive/aptX/aptX HD/AAC/SBC and other audio encodings, allowing high-quality audio to be transmitted wirelessly to provide a music experience beyond CD level.
An independent and dedicated preamplifier circuit expands the D900’s versatility in floorstanding speaker systems. The high-precision volume control with 0.5dB steps enables exceptionally smooth and refined volume adjustments, ensuring a comfortable listening experience.
TOPPING achieved incredible jitter rejection using CPLD to process the clock signal and optimize the digital signal. In the jitter test commonly used by current measurement websites, the D900 has excellent jitter performance, with jitter as low as -157dB.
TOPPING develops a brand new PEQ adjustment that supports ten customizable frequency bands. Topping's brand new PEQ algorithm and desktop software allow you to fine-tune the frequency, gain, and bandwidth of each PEQ band. The software supports the import of target and original curves as well as the compensation of curves using target curves. It can also save multiple profiles for easy switching.
The main part of the remote control is crafted from a single block of high-strength aluminum alloy using precision CNC machining, followed by fine sandblasting for a refined finish.
The clean, angular lines are not just structural- they reflect a deeper appreciation for aesthetic order. Bold yet restrained, like precisely arranged notes in a composition, the design strikes a balance between logic and emotion. Beneath its cool exterior lies a sound that is the essence of the D900’s dual nature.
As always, If you have any questions, suggestions, or comments, please feel free to contact us for product details or any other inquiries. You can reach our customer support team through live chat or email us directly at support@shenzhenaudio.com. Additionally, you can easily find us on our social media accounts.
PSRM is a discrete 1-bit decoding architecture composed of an ultra-high-speed switching logic array and precision voltage references. After rigorously evaluating over 20 types of components and configurations, TOPPING selected a combination that delivers extremely fast response while preserving the integrity of the original signal. The component selection also minimizes interference with the power supply system, laying the foundation for exceptional performance.
The design of the voltage reference power supply is critical, as it directly determines the accuracy of the analog output. The digital switching logic operates at the nanosecond level. While these fast switches regulate current fluctuations, they can still affect the purity of the reference voltage element, which has a direct impact on distortion and noise. To address this, it has pioneered a stable, noise-free, purely resistive reference power design. This synergy between the reference power supply and switching logic enables the D900 to reproduce the original audio signal with astonishing fidelity, achieving harmonic distortion below 140dB and a SNR of 131dB.
Equipped with QCC5125 chip, D900 supports Bluetooth 5.1 and can support up to 96kHz/24bit. Also it fully supports LDAC/aptX-Adaptive/aptX/aptX HD/AAC/SBC and other audio encodings, allowing high-quality audio to be transmitted wirelessly to provide a music experience beyond CD level.
An independent and dedicated preamplifier circuit expands the D900’s versatility in floorstanding speaker systems. The high-precision volume control with 0.5dB steps enables exceptionally smooth and refined volume adjustments, ensuring a comfortable listening experience.
TOPPING achieved incredible jitter rejection using CPLD to process the clock signal and optimize the digital signal. In the jitter test commonly used by current measurement websites, the D900 has excellent jitter performance, with jitter as low as -157dB.
TOPPING develops a brand new PEQ adjustment that supports ten customizable frequency bands. Topping's brand new PEQ algorithm and desktop software allow you to fine-tune the frequency, gain, and bandwidth of each PEQ band. The software supports the import of target and original curves as well as the compensation of curves using target curves. It can also save multiple profiles for easy switching.
The main part of the remote control is crafted from a single block of high-strength aluminum alloy using precision CNC machining, followed by fine sandblasting for a refined finish.
The clean, angular lines are not just structural- they reflect a deeper appreciation for aesthetic order. Bold yet restrained, like precisely arranged notes in a composition, the design strikes a balance between logic and emotion. Beneath its cool exterior lies a sound that is the essence of the D900’s dual nature.
As always, If you have any questions, suggestions, or comments, please feel free to contact us for product details or any other inquiries. You can reach our customer support team through live chat or email us directly at support@shenzhenaudio.com. Additionally, you can easily find us on our social media accounts.
