Both versions of the SV021 PRO use a 50 mm dynamic driver. Its multi-layer aluminium composite diaphragm and copper-aluminium voice coil are designed to balance detail retrieval, dynamics and controlled low-frequency response within a closed-back construction.

V1 and V2 share the same driver and housing foundation. Their difference lies not in the core construction, but in the internal acoustic tuning.

The SV021 PRO V1 represents the original tuning of the model. Its character is defined by a direct, detailed and energetic presentation, with clear midrange, taut bass and a more pronounced upper-frequency presence.

Instrument outlines and rhythmic elements are clearly separated, while vocals maintain a focused presence. V1 preserves the original acoustic proportions of the SV021 PRO while retaining the shared driver and housing construction.

The SV021 PRO V2 retains the shared construction while introducing revised internal acoustic tuning. A fine mesh layer placed in front of the driver, together with reworked rear-chamber damping and venting, results in fuller lower mids and smoother transitions through the upper frequencies.

While retaining detail, V2 presents a calmer and more neutral-focused sound. The distinction between the two versions comes exclusively from this internal acoustic fine-tuning.

The genuine wood earcups give every unit unique grain and a warm, natural appearance. They also define the outer surface of the closed acoustic chamber, allowing the visual identity and construction of the SV021 PRO to work as one.

The earcups are combined with a stable metal headband assembly. Together, these materials form a rigid yet comfortable construction designed for long-term use.

The soft velour earpads surround the ears, while the closed-back design helps reduce the influence of surrounding noise. The padded headband and approximately 289 g weight support an even, balanced fit.

The around-ear construction supports both wearing comfort and a proper acoustic seal. This contributes to stable bass perception and helps reduce the effect of external noise.

The OFC cable uses a detachable, dual-sided headphone connection, making transport and integration into a system easy to manage. Its source-side 3.5 mm jack connector is complemented by a 6.35 mm adapter.

The cable provides a stable connection and tidy everyday use. Its detachable design supports long-term use in line with the headphone's original connection system.