High-end components
Upgraded components for an enhanced sound
We've upgraded many of the internal components so that the ZX700 series now has components you’d expect from the highest-grade player, to give it a dramatic evolution in sound quality.
Large solid high polymer capacitor
Adopted as battery assist for the amplifier block, the newly developed large solid high polymer capacitor offers large capacitance and low resistance. Able to instantaneously supply large amounts of power, it can accurately output signals by preventing sudden falls in voltage. This contributes to clear, powerful and accurate bass sound, as well as clear vocals.
FT CAP3 (High polymer capacitor)
Custom-made for Sony and tuned by Sony engineers, FT CAP3 is adopted for all bypass capacitors in the audio block power supply. Drawing on know-how cultivated in high-end home audio development, they help to improve sound expression and create a smoother sound, with a wider sound space, more transparency, and tighter bass.
Large coil for balanced output
To supply the optimum balanced output signal from the digital amp, a larger, 8mm coil is used as the L-C filter. By incorporating flat conductive wire, we've achieved lower distortion and lower resistance, which creates an improved sound resolution across all frequencies.
OFC (Oxygen-Free Copper) milled block
An OFC (Oxygen-Free Copper) milled block covers the digital block, helping both to strengthen digital ground and improve noise shielding from digital block elements such as the application processor and memory devices. The result is a clearer sound that appears to rise up from silence.
Faithful sound reproduction
S-Master™ HX digital amp technology, independently developed for Walkman®, is compatible with the Native DSD format and supports balanced and high power output. It reduces distortion and noise across a wide range of frequencies, for rich and full-bodied sound, further enhanced by new high quality sound lead-free solder.
Film Capacitors
High quality film capacitors deliver voltage with a linear response across frequencies, resulting in reduced distortion and noise.
High polymer capacitors
The high polymer capacitors within the NW-ZX700 series are used to strengthen the power supply of the amp block for unbalanced output, enhancing low-range reproduction performance for a more expansive listening experience.
Milled aluminium frame
An aluminium alloy frame provides a highly rigid case that’s resistive to electrical noise and other interference for stable, high quality sound.
OFC Cable
The low-resistance Oxygen-Free Copper (OFC) cable is used for internal headphone connection, offering low distortion and superior channel separation.
Crystal oscillators
Two compact low-phase-noise crystal oscillators ensure precision clock stability at sampling rate multiples of 44.1kHz and 48kHz. The crystal electrode piece is formed with gold vapour deposition for enhanced electric characteristics and improved instrumental separation. This helps remove a veil and reduce noise to realise clear, open sound reproduction.
Fine Sound Resistor
The surface mounted Fine Sound Resistor ensures even, effective distribution of power to the circuit components, for consistent sound quality.
High quality solder containing gold
The exceptional conductivity of gold ensures absolute minimum signal loss. For clearer sound and vocals, a premium, audio-grade lead-free solder with a small amount of gold connects the circuit of the NW-ZX700 series to the battery.
Reflow solder containing gold
Just like previous acclaimed premium Walkman® models, the ZX700 series uses reflow solder containing gold, and it features extensively across the circuit board surface – so the overall effect is significant, including improved sound localisation and a wider sound space.
Low dielectric circuit board and filled via
The printed circuit board uses low dielectric material to realise accurate signal transmission, while the via holes are filled with copper to further reduce impedance. The result is a wide sound space with clear, bright sound.
[A] Normal via [B] Filled via
[A] Normal via [B] Filled via
Optimized Circuit board Layout
By dividing the Audio block (highlighted in red) and the Power/Digital block (in blue), the circuit board layout has been optimised to ensure sound quality is unaffected by digital interference.
Balanced Connection
The ZX700 series features a balanced single plug, designed for the Ø4.4mm balanced connection cable. This separates left and right sound signals, while minimising signal transmission loss and resulting sound deterioration.
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NW-ZX707