CUSTOM AUDIO
VIDEO &
BROADCAST
Discrete component microphone preamplifier design to specified EIN; UAC2.0 multi-channel audio interfaces achieving sub-5ms round-trip latency; Dante AES67 networked audio endpoint hardware; broadcast HD-SDI and 3G-SDI video electronics; Class D GaN amplifier design; and wireless IEM system electronics — engineered to the standards that professionals measure.
The Engineering Problem
Professional Audio and Video Hardware Engineering Operates at the Intersection of Four Simultaneous Disciplines
A preamplifier that meets EIN in simulation but couples power supply switching noise via PCB layout fails in the recording. A USB interface that achieves stated latency only at 32-sample buffers and glitches under CPU load is not a professional audio interface. A Dante endpoint without proper PTP clock distribution is not a professional networked device.
Professional audio/video requires simultaneous depth in low-noise analogue, digital audio firmware, network audio timing, and video signal integrity. AV over IP drives demand for custom Dante/AES67 endpoints; content creation demands broadcast specs at prosumer cost; immersive audio creates new categories requiring all four disciplines simultaneously.
We design from noise floor, distortion, latency, and network timing specifications outward — working backward through circuit topology, PCB layout, firmware architecture, and protocol implementation. Customers who buy professional audio hardware will immediately know if the production unit doesn't match the spec sheet.
Audio, Video & Broadcast Hardware Categories We Build
From discrete Class A microphone preamplifiers to Dante networked endpoints to broadcast SDI video — custom professional audio and video electronics across every application domain.
Microphone & Preamplifier Electronics
Networked Audio & Dante Endpoints
Power Amplifiers & DSP Electronics
USB Audio Interfaces
Broadcast Video Electronics
Wireless Audio Systems
Podcast & Content Creation Hardware
Live Sound & Touring Electronics
Analogue Audio Circuit Design
Discrete Class A preamplifier design to specified EIN below −128 dBu, transformer-balanced inputs above 80 dB CMRR, JFET capsule impedance conversion, phantom power with short-circuit protection, and PCB layout managed for minimum channel crosstalk and supply noise coupling.
Digital Audio & DSP Firmware
DMA-driven audio pipelines at sub-1ms processing latency with I2S/TDM/S/PDIF bus firmware, fixed-point FIR/IIR biquad filters, parametric EQ and Linkwitz-Riley crossover, and deterministic FIFO buffer management.
Networked Audio Protocols
Dante Brooklyn II/Ultimo integration and custom OEM Dante embedded development, AES67 PTP IEEE 1588 grandmaster/slave clock electronics, AVB 802.1AS, RAVENNA firmware, and Audinate certification support.
Broadcast Video Electronics
HD-SDI and 3G-SDI signal generation/reception with cable equalisation and re-clocking, HDMI 2.0/2.1 with HDCP 2.2, FPGA-based format conversion and keying, frame synchroniser electronics, and LTC/VITC timecode generation.
RF Wireless Audio Systems
UHF wireless microphone electronics in 470–698 MHz, 2.4 GHz FHSS with digital audio compression, wireless IEM with maximal ratio combining diversity, frequency agility with automatic coordination, and compander design for analogue UHF systems.
USB Audio Interface Design
UAC2.0 driverless multi-channel firmware for Mac/Windows/iOS/Android, sub-5ms round-trip latency at standard buffer sizes, 24-bit ADC/DAC at SNR >110 dB, digitally controlled preamplifier gain, and MIDI USB class.
Power Amplifier Electronics
Class D GaN/SiC amplifier design with output filter for low THD into professional loudspeaker loads, MAX98390/TAS5825M DSP integration, discrete Class AB design, and full protection electronics — DC offset, thermal, short circuit, overcurrent.
Compliance & Certification
CE RED, FCC Part 15, FCC Part 74/90 for licensed professional wireless, Bluetooth SIG, Audinate Dante certification, AES67 compliance, IEC 62368-1 AV safety, and UKCA for UK market.
Chipsets & Platforms
Platforms, Protocols & Standards
Tested silicon and proven stacks — no experimental platform dependencies.
Discrete Microphone Preamplifier & Analogue Audio Electronics
Specified EIN · Measured THD+N · Production-Verified
A studio preamplifier must hit EIN ≤−130 dBu, THD+N below −100 dBFS at working gain, and CMRR above 80 dB to 20 kHz — while sharing a supply with digital circuits that will couple switching noise unless PCB layout and power filtering prevent it. We design from transistor biasing level, not by selecting an op-amp that approximates the required EIN.
Dante, AES67 & Networked Audio Protocol Engineering
PTP Clock Synchronisation · Dante Certification · Sample-Accurate
Building a Dante endpoint requires either Audinate OEM module integration or custom embedded development — both demanding deep understanding of PTP clock synchronisation, device discovery, and the certification process. AES67 requires sub-microsecond PTP hardware timestamping for 1-sample accuracy at 48 kHz. We implement at the level that Dante certification and AES67 interoperability testing validate.
Broadcast Video, Wireless Audio & Content Creation
SDI Signal Integrity · FCC Part 74 · Prosumer at Professional Spec
Broadcast buyers evaluate against facility and touring standards developed over decades. Content creation wants broadcast-quality at prosumer price — same engineering discipline, different BOM target. FCC Part 74 and Part 90 define the commercial constraint for professional UHF wireless audio, requiring simultaneous technical performance and regulatory compliance expertise.
Why Professional Audio Companies Choose Ankh
Analogue Audio from the Noise Floor Specification
EIN −130 dBu is a circuit specification — sub-nV/√Hz component selection, source resistance matching for minimum noise figure, PSRR management in the topology, and PCB layout that prevents switching noise coupling. We design to specified EIN measured on the production PCB, not a simulation or evaluation board.
Networked Audio at the Protocol Level
Dante certification and AES67 PTP sample-accurate timing require engineering PTP BMCA, sync/announce intervals, and hardware timestamp accuracy — not just integrating a module. We implement networked audio protocols at the level that certification and interoperability testing actually validates.
DSP Audio Firmware as a Real-Time Engineering Discipline
A pipeline that drops samples under CPU load is not a professional audio product. We design audio firmware with DMA-driven transfer, interrupt priority assignment that preserves continuity under load, and round-trip latency measured at all buffer sizes on representative host hardware.
Broadcast Video Signal Integrity as the First Constraint
SDI signal generation requires proper output impedance, slew rate, and cable equalisation — broadcast video that fails at signal integrity fails completely, with no partial operation. We design signal integrity as the first constraint, not a final verification step.
Dante-Networked Active Stage Monitor System
A professional monitor manufacturer needed a Dante-networked, DSP-equalized, GaN Class D active stage monitor — Dante certified, with published SNR/THD+N specs and first-submission CE/FCC compliance.
Custom PCB integrating Dante Brooklyn II, ADSP-21xx 4-band parametric EQ and 4th-order Linkwitz-Riley crossover, 500W GaN Class D, loudspeaker protection, and USB config interface. 116 dB SNR on production PCB.
- SNR 116 dB measured on production PCB
- THD+N −104 dBFS at 1W output, 1 kHz
- CE and FCC Part 15 certification achieved first submission
- Dante certification passed; compatible with all current Dante ecosystem devices
Professional 2.4 GHz Wireless IEM System
A touring audio startup needed an 8-channel 2.4 GHz FHSS wireless IEM system capable of 32-unit co-location without RF dropout, perceptually transparent audio, and FCC Part 15/CE RED certification.
FHSS coordination firmware with maximal ratio combining dual-antenna receiver achieving <0.1% dropout in 32-unit stress test. Beltpack with 105 dB dynamic range headphone amplifier and 12-hour USB-C operation.
- < 0.1% dropout rate in 32-unit co-location RF stress test
- 5 ms end-to-end wireless audio latency measured
- 105 dB dynamic range headphone amplifier output
- FCC Part 15 and CE RED certified — US and EU market launch
Building professional audio, video or broadcast hardware? Let's engineer it to specification.
Analogue audio circuit design from EIN specification. Networked audio protocol implementation at the Dante certification level. Full-stack delivery from microphone preamplifier electronics through broadcast SDI video through content creation hardware.
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