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Audio Technica ATN91R Stylus

SKU 64433
Sold out
Original price £22.99 - Original price £22.99
Original price
£22.99 - £22.99
Current price £22.99

  • Aluminium alloy tube cantilever for the pick-up of subtle details
  • Replacement stylus for AT91R
  • Bonded conical stylus
  • Replacement stylus for AT91R cartridge


Powered by unrivalled processing capabilities and exclusive technologies, the SDP-75 opens the way to a whole new generation of luxury home cinema, --achieving ultimate performance and sustainability within the fast-moving home theater entertainment industry, now driven by 3D Audio and 4K Ultra High Definition video with High Dynamic Range (HDR) compatibility.

The SDP-75 is available in 16, 24, and 32 channel versions. It also supports the latest HD Audio and Video formats including D-Cinema while offering 3D audio decoding options and delivering up to 32 discrete, uniquely-rendered channels of immersive audio content at an unprecedented level of quality, for a whole new listening experience, leaving the competition far behind. Our exclusive Anechoic EQ improves loudspeakers at higher frequencies than can be equalized with high-resolution based only on in-room measurements.

The SDP-75 is Roon Ready, capable of up-mixing two-channel or multi-channel music from Roon via the built-in Auro Auro-matic, Dolby Atmos, or DTS:X algorithms.

From the revolutionary hardware platform to the software environment, everything has been specified with no compromise to provide a unique user experience unmatched by any other product available.


At the heart of this new generation of processor is a new approach to processing digital signals, based on a revolutionary hardware architecture that is highly scalable and easy to upgrade.

Instead of traditionally using multiple DSP chips implemented in a complex and rigid architecture, a partnership between JBL Synthesis and Trinnov allowed us to develop a multi-purpose processing platform, based on a multi-core Intel computer processor to provide unrivaled processing capabilities. Used every day in demanding professional environments, this architecture meets the highest requirements in terms of reliability. Despite its extreme sophistication, the SDP- 75 is easy to operate thanks to a unique user-friendly and self-explanatory web-based user interface.


A partnership between JBL Synthesis and Trinnov in the development of the SDP-75 processor has laid the stage for the success of the SDP-75. With over 60+ years of audio experience JBL has become the choice of almost all top music and movie professionals in the industry. This experience has allowed JBL to release some of the most influential products being used today.

Trinnov Audio brings years of experience building top of the line processors for numerous consumer and commercial applications. Their team of passionate audio engineers and professionals helps bring to life innovative solutions that are always improving the quality of sound.

The Trinnov Optimizer provides automated multi-point Room EQ, with HARMAN optimization parameters and target responses from HARMAN X research.

MAIN FEATURES - 16, 24, or 32 Channel Digital Audio Processor - Universal Spatial-Accurate 3D Audio Playback - Roon Ready - 118 Digital and Analog Inputs, and 80 Audio Outputs - 7x HDMI Inputs, 2x HDMI Outputs - Full Matrix Input/Output - Setup Wizard - User-friendly, self-explanatory user interface - Built-in WiFi & UPnP - DLNA Compliant Digital Media Renderer - Wide choice of remote options

General Specifications

32, 24 or 16 Channel Digital Audio Processor
Universal Spatial-Accurate 3D Audio playback
118 Digital and Analog In- puts and 80 audio Outputs
8x HDMI Input, 2x HDMI Outputs
User-friendly, self-explanatory user interface
Built-in WiFi & UPnP/DLNA Compliant Digital Media Renderer
Wide choice of Remote Options
7 x HDMI Inputs (4 programmed for HDMI 2.0, 3 Pro- grammed for HDMI 1.4 compatibility) • 3x RCA stereo
1x 16 AES channels on DB25
2x XLR stereo
4x S/PDIF coaxial on RCA
1x RCA 7.1
4x S/PDIF optical on TosLink
1x 3D Microphone Input
2x HDMI outputs
32x Balanced on 4x DB25
16x AES channels on DB25
16x Balanced on 16x XLR
1x RCA stereo
1x S/PDIF coaxial + 1x S/PDIF optical
1 AML extension link
Dimensions (H x W x D) 6.1” x 16.9” x 15.9” (155mm x 430mm x 405mm)
Weight 30.8 lb (14.5kg)
HDMI 2.0 compliant digital audio with 3D video pass-though
HD Audio Codecs Dolby TrueHD, DTS-HD Master Audio
3D Audio Codecs Dolby Atmos, Auro3D, DTS:X
LPCM Audio 16-channels AES input compatible with Digital Cinema Servers
Dolby Atmos extraction of Dolby Atmos/7.1 AES/DCI Audio from Digital Cinema Servers
UPnP/DLNA renderer WAV, AIFF, OGG, FLAC up to 24 bits / 192 kHz
Manual processing Several layers of 31 bands Graphic EQ, gain, polarity and delay available for every channel
Comprehensive Processing latency control:
Total delay given in meters/milliseconds/frames for the listening point;
Adjustable global delay for accurate Lip Sync
Anechoic EQ for popular Revel and JBL Synthesis Loudspeakers
Provides high-resolution EQ that can only be achieved using anechoic measurements
VNC Remote Control through the network from any smartphone, tablet or laptop
Web-based responsive interface
Automation via Telnet and RS232 protocols
Crestron, Savant, Control4, AMX, RTI and URC modules available
Built-in Gigabit Ethernet and WiFi
Next Generation Hardware platform
Revolutionary architecture, scalable processing platform
64 bit Floating point & 24 bit / 192 kHz native processing
Software-oriented upgrades provided over Internet, no need for DSP upgrade
Robust design, inspired from Professional Audio product lines
Dedicated linear power supply with toroidal transformer on the Analog audio circuit
Dedicated PSU / switch-mode power supply on the digital audio circuit
Automated Multi-point Room EQ utilizing the Trinnov Optimizer with custom HARMAN operating parameters
Simple drop-down loudspeaker selection
Exclusive HARMAN EQ Targets based upon industry-leading HARMAN X research
State of-the-art Bass Management
Easily set different high-pass and low-pass frequencies and slopes for each pair of speakers
Optionally bass manage very small surround speakers to the nearest speaker capable of lower frequency extension, which can then itself be crossed-over to the subwoofers
Coming Soon – Free Software Upgrades in 2019
IMAX Enhanced® to see and hear IMAX Enhanced media as the filmmaker intended
DTS:X Pro® with up to 32 channels


Delivery is made by common carrier next working day. Delivery is FREE for orders in-stock and over £100 or £9.99 for orders less than £100 or special delivery items.

Statutory Cancellation Right

You have the statutory right to cancel your order for any reason within 14 days beginning with the day you receive the item (please see clause 2 of our Conditions of Sale for the full instructions on cancellation and further information on your right of cancellation). We only accept cancellations via phone - 0115 975 8613, email - or post - Superfi Returns, DB House, Rani Drive, Nottingham, NG5 1RF, United Kingdom.

Our Voluntary Returns Policy

As well as your statutory cancellation rights described above, you can return most products within 30 days of receipt of the products if the products are complete and are in an unused and undamaged condition. We only accept returns via phone - 0115 975 8613 or post - Superfi Returns, DB House, Rani Drive, Nottingham, NG5 1RF, United Kingdom.

Please note that this returns policy doesn't affect your statutory rights and therefore doesn't affect your right of cancellation as described above.

Please note that you must return each item in the same condition in which you received it. This means that new items must be returned new, unused and complete (including all accessories). Refunds for returned items that are not received in this condition, may be reduced.

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