German manufacturer of high-end analog studio processors with 120V rail technology

Mastering-grade five-band parametric equalizer with SPL's 120V rail technology. Extreme headroom and surgical precision for final processing.

16-channel analog summing mixer with SPL's 120V rail technology for exceptional headroom and dynamic range.

Expansion unit for the MixDream adding 16 more channels of 120V analog summing. Requires a MixDream as host.

Rack-mount surround monitor controller supporting up to 7.1 configurations with bass management and multiple speaker sets.

Survey-backed equipment entry from the Upsound 2026 studio equipment research. Observed in 4 studios with 4 total mentions. Country coverage: DE: 1, SE: 3. English category/type: Compressors. Raw survey examples: SPL Transient Designer | SPL Transient designer x4 | SPL Transient Designer x2 | SPL Transient designer.

SPL Transient Designer 4 — a piece of outboard signal-processing hardware used in professional studio recording and production.

SPL Transient Designer — a piece of outboard signal-processing hardware used in professional studio recording and production.

Survey-backed equipment candidate from the 2026-04-28/29 Upsound studio equipment survey. Observed in 1 of 44 surveyed studios (1 mentions; US 0, UK 0, DE 1, SE 0, DK 0). Raw examples: SPL Iron

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