Merging Technologies ADA8V3P – 8-Channel Mic/Line A/D & D/A Converter Card for HAPI MKIII (DSD/DXD)

OVERVIEW

The Merging Technologies ADA8V3P is the flagship 8-channel mic/line A/D and D/A converter card for the HAPI MKIII, combining world-class microphone preamps with premium analogue outputs in a single expansion module. Supporting PCM sample rates up to 384kHz, together with DXD and DSD formats up to DSD256, it provides the highest level of conversion performance for recording studios, mastering facilities, broadcast environments, immersive audio production and critical monitoring applications. Every Premium card is individually measured and selected to ensure it meets Merging Technologies’ most demanding performance specifications.

Eight remote-controlled microphone preamps offer up to 66dB of clean gain, individually switchable 48V phantom power, polarity inversion and software-controlled input settings for complete recording flexibility. The premium A/D section delivers up to 139dB (A-weighted) dynamic range on line inputs, while the mastering-grade D/A stage achieves up to 126dB (A-weighted) dynamic range with THD+N as low as 0.00014%, providing exceptional transparency, ultra-low distortion and remarkable stereo imaging.

Whether you’re recording orchestras, producing immersive Dolby Atmos mixes, mastering high-resolution releases or building a reference-quality broadcast system, the ADA8V3P offers the flexibility, sonic precision and reliability expected from one of the industry’s leading networked audio platforms. Fully integrated with the modular HAPI MKIII ecosystem, it provides a future-ready analogue I/O solution for the most demanding professional workflows.

KEY HIGHLIGHTS

Premium DXD & DSD Performance

Supports PCM sample rates up to 384kHz, along with DXD and DSD formats up to DSD256, making it ideal for the highest-resolution professional recording and playback workflows.

Complete 8-Channel Analogue I/O

Combines eight remote-controlled microphone/line inputs with eight premium analogue outputs, providing a complete recording and monitoring solution within a single HAPI MKIII expansion card.

Reference-Grade Mic Preamps

Eight transparent microphone preamps provide up to 66dB of software-controlled gain with individually switchable phantom power, polarity inversion and flexible input configuration.

Mastering-Grade Analogue Conversion

Delivers up to 139dB dynamic range on line inputs and 126dB (A-weighted) on outputs, ensuring pristine recordings and exceptionally transparent playback.

Individually Selected Premium Hardware

Every Premium card undergoes individual testing and selection to guarantee the highest levels of conversion accuracy, consistency and overall performance.

Designed for HAPI MKIII

Integrates seamlessly into the HAPI MKIII modular platform, providing a scalable analogue I/O solution for studio, mastering, broadcast and immersive audio systems.

FEATURES

• Premium 8-channel Mic/Line A/D & D/A converter card for the Merging Technologies HAPI MKIII.
• Supports PCM sample rates up to 384kHz, DXD and DSD64/128/256.
• Eight remote-controlled microphone preamps with up to 66dB of gain.
• Eight mastering-grade balanced analogue line outputs.
• Software-controlled microphone gain with precise 0.5dB adjustment.
• Individual +48V phantom power switching on every microphone input.
• Per-channel polarity inversion.
• Selectable microphone boost mode for low-level sources.
• Software-configurable input impedance.
• Up to 139dB (A-weighted) dynamic range on line inputs.
• Up to 126dB (A-weighted) dynamic range on analogue outputs.
• Ultra-low THD+N for exceptional recording and playback transparency.
• Outstanding channel separation and stereo imaging.
• AES59 (Tascam) DB-25 analogue input and output connectivity.
• Software-selectable analogue output reference levels.
• Individually tested and selected Premium hardware for maximum performance.
• Designed for recording, mastering, broadcast, immersive audio and critical monitoring applications.
• Fully compatible with the Merging Technologies HAPI MKIII modular platform.

TECHNICAL SPECS

General

Product Type: Premium 8-Channel Mic/Line A/D & D/A Converter Card

Compatibility: Merging Technologies HAPI MKIII

Conversion: Analogue-to-Digital & Digital-to-Analogue

Maximum PCM Sample Rate: 384kHz (DXD)

DSD Support: DSD64, DSD128, DSD256

Bit Depth: 24-bit

Application: Professional recording, mastering, broadcast, immersive audio and monitoring

Mic Preamp & A/D Section

Mic Inputs: 8 × Remote-Controlled Mic/Line Inputs

Maximum Mic Input: +24dBu (Pad), +12dBu (Mic), +0dBu (Mic Boost)

Gain Range: 0 to +66dB

Gain Resolution: 0.5dB

Input Impedance: 3kΩ / 10.4kΩ (software selectable)

Dynamic Range (Mic): 137dB (A-weighted)

Dynamic Range (Mic Boost): 128dB (A-weighted)

Line Input Dynamic Range: 139dB (A-weighted)

THD+N: < -111dB (0.00028%)

Equivalent Input Noise (EIN): < -127dBu

Interchannel Crosstalk: < -130dB

Common Mode Rejection: >75dB

Phantom Power: +48V (software switchable)

Polarity Invert: Yes

Low-Cut Filter: Available on supported hardware revisions (80Hz, 12dB/octave)

D/A Output Section

Analogue Outputs: 8 × Balanced Line Outputs

Maximum Output Level: +24dBu or +18dBu (software selectable)

Output Impedance: <80Ω

Dynamic Range: 126dB (A-weighted typical)

THD+N: < -117dB (0.00014%)

Interchannel Crosstalk: < -139dB

Output Gain Resolution: 0.5dB

Frequency Response

A/D SECTION

• 48kHz: 9Hz–22kHz (±0.3dB)
• 96kHz: 9Hz–46kHz (±0.3dB)
• 192kHz: 11Hz–94kHz (±0.3dB)

D/A SECTION

• 48kHz PCM: 0Hz–22kHz (±0.3dB)
• 96kHz PCM: 0Hz–46kHz (-3dB)
• 192kHz PCM: 0Hz–92kHz (-3dB)
• DSD: 0Hz–20kHz (±0.3dB)
• Extended DSD: 0Hz–50kHz (-3dB)

Latency

A/D: 8 samples (44.1–192kHz), 10 samples (384kHz DXD)

D/A: 9 samples (Slow Roll-Off), 35 samples (Sharp Roll-Off)

Connectivity

Analogue Inputs: 1 × DB-25 Female (AES59/Tascam)

Analogue Outputs: 1 × DB-25 Female (AES59/Tascam)

Compatibility

Designed exclusively for the Merging Technologies HAPI MKIII

Supports PCM, DXD and DSD production workflows

Fully integrated with the Merging Technologies networked audio ecosystem.