Storm Audio ISRFUSION

The StormAudio ISR Fusion 20 is a custom-install immersive AV receiver with 20 decoding / upmixing channels and 16 amplified main channels (plus balanced outputs for channels 17-20). It includes Dirac Live (all grades), StormXT channel expansion, HDMI 2.1a / HDCP 2.3 with 8K / 4K120, and support for Dolby Atmos, DTS:X Pro, Auro-3D, IMAX Enhanced, MPEG-H and Sony 360 Reality Audio.

Key Features

• 20 output / decode-upmix channels; StormXT channel expander; Dirac Live licence (all grades) with Active Room Treatment (unlimited speakers)
• 16× amplified analog main outputs (5-way binding posts, ch 1-16); balanced XLR outs for ch 17-20; Zone 2 optical digital downmix
• HDMI 7 in / 2 out; HDMI 2.1a / HDCP 2.3; eARC/ARC; HDR10 / HDR10+ / HLG / Dolby Vision
• Amplifier: up to 150 W/ch (8 Ω) / 300 W/ch (4 Ω) SE @ 1% THD; bridgeable up to 3× BTL 500 W; continuous 2000 W / peak 2500 W (CEA-490-A)
• Roon Ready; coaxial ×3 / optical ×3 digital inputs; 1× XLR + 4× RCA analog stereo inputs
• Web configurator, TCP/IP API, StormRemote app; Crestron / Control4 / Savant / RTI / ELAN drivers
• Universal SMPS 100-240 V; 4 RU; home or rack (removable ears)

Specifications

Figures below are from the official StormAudio CI ISR Fusion 20 Specification sheet (2025.11.12). Identity: ISR Fusion 20.

Processing and HDMI

Source: StormAudio ISR Fusion 20 Spec Sheet - Main Features / Multichannel / HDMI.

Model	ISR Fusion 20
Immersive formats	Auro-3D / Dolby Atmos / DTS:X Pro / IMAX Enhanced / MPEG-H / Sony 360 Reality Audio
StormXT channel expander	Yes
Dirac Live	All grades licence included; ART supporting unlimited speakers
Output channels	20
Decoding / upmixing channels	20
Input sampling rate supported	Up to 192 kHz
Post-processing sampling rate	48 kHz
Parametric EQ per channel	Up to 20 filters
Multi-way crossover	Up to 4 per channel (6-48 dB/oct, Linkwitz-Riley, Butterworth)
HDMI inputs / outputs	7 / 2
HDMI standard	HDMI 2.1a / HDCP 2.3
Max resolution support	8K / 4K 120 fps (40 Gbps)
HDR	HDR10 / HDR10+ / HLG / Dolby Vision
ARC / eARC	Yes / Yes

Audio I/O and amplifier

Source: StormAudio ISR Fusion 20 Spec Sheet - Audio Inputs / Outputs / Amplifier specifications.

Streaming	Roon Ready end point
Digital inputs (coaxial / optical)	3 / 3
Analog stereo inputs (balanced XLR)	1
Analog stereo inputs (unbalanced RCA)	4
Amplified main outputs (ch 1-16)	5-way binding posts
Balanced main outputs (ch 17-20)	XLR
Zone 2 outputs	Stereo downmix, digital optical
Max power per channel SE @ 1% THD	150 W (8 Ω) / 300 W (4 Ω)
Max power BTL @ 1% THD (up to 3 configurable)	500 W (8 Ω) / 500 W (4 Ω)
Continuous power capability	2000 W
Peak power capability (CEA-490-A)	2500 W
THD+N, 5 W, SE	< 0.0015%
SNR, 5 W, SE	> 100 dB
SNR, p-rated, SE	> 115 dB

Control, power, casing

Source: StormAudio ISR Fusion 20 Spec Sheet - Control / Power Supply / Casing.

Front panel display	TFT 5"
Ethernet / Wi-Fi	Yes / No
USB Type-A	2 (upgrade and monitoring)
Output triggers	4
IR remote in / out	1 / 1
Power supply	Universal SMPS, 100-240 V
Form factor	4 RU; home / rack (removable ears)
Net weight	16 kg (35.3 lbs)
Dimensions D × W × H (no ears, no feet)	49.1 × 44.2 × 17.4 cm
Ears / feet add	Ears +4 cm (2 × 2 cm); Feet +2 cm
Packed dimensions	62 × 54 × 30 cm

Datasheets

Public manufacturer documents (link only - this does not add a downloads module):

• StormAudio ISR Fusion 20 Specification Sheet (PDF)
• StormAudio ISR Fusion 20 product page