The JBL Synthesis SDP-55 and SDR-35 platforms are based on the acclaimed Arcam AV40 processor and AVR30 (the UK brand being part of the Harman group of companies). However, we are told that these have been upgraded by Harman engineers in several critical areas to create the Synthesis offerings.

Furthermore, while the I/Os are broadly identical, the SDP-55 and SDR-35 apparently sport the superior 24-bit /192 kHz ESS Sabre 9028 Pro DAC (replacing the 9026), which results in significantly lower noise (THD+N) at -7db/channel, states the brand. The Synthesis design's reduced levels of distortion aboard are said to be exploited by the latest 16-channel audio technologies, including Harman's exclusive Logic 16 processing: a proprietary up-mixer with roots in Lexicon's famous Logic 7 mode. Synthesis states that Logic 16 provides a heightened sense of 3-dimensional realism and will enhance any input source from mono up to 15.1, including all Dolby formats.

The SDP-55 and SDR-35 also offer the opportunity to upgrade a system's low-frequency performance by onboarding the flagship 'Multi Sub' DIRAC Live bass control (available to Arcam owners as a $500 upgrade). This bass control tech uses machine learning and AI to quickly determine the ideal settings for multiple subwoofers and automatically apply filters if required. The upshot is a much easier route to setting up your system, which could otherwise take days to achieve.

Additionally, the JBL Synthesis models are equipped with Dante IP networking capability, which sends uncompressed AV over Ethernet to compatible system components. This enables cinema system builders to use inexpensive CAT cable between the SDP-55 and, for instance, Synthesis SDA-7120 7 channel and SDA-2200 2 channel Class G amplifiers, rather than traditionally more industrial, exotically priced interconnects. Naturally, it also has its place in large-scale residential AV networks.

The JBL Synthesis and Arcam models are otherwise quite similar, offering 16-channel Dolby ATMOS, DTS:X, Auro 3D, IMAX Enhanced audio modes and 4K Ultra HD, Dolby Vision, HLG, HDR10, HDR10+ and 3D video formats with HDMI 2.0b/HDCP 2.2 capability.

The brand platforms also share Class G power specs (SDR-35/ AVR30), Wi-Fi/Ethernet, RS232 and IR control connectivity, Google Cast/UPnP capability, Roon Ready status, Bluetooth aptX HD and the Harman Luxury MusicLife app.

The JBL Synthesis SDP-55 Pre/Processor costs £5,000, while the JBL Synthesis SDR-35 AVR has a ticket price of £6,000, and both are available separately through Karma AV's JBL Synthesis retailer network.

Visit JBL Synthesis for more information

Jay Garrett's avatar

Jay Garrett

StereoNET’s resident rock star, bass player, and gadget junkie. Jay heads up StereoNET as Editor for the United Kingdom and Europe regions. His passion for gadgets and Hi-Fi is second only to being a touring musician.

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Posted in: Home Theatre

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