Onkyo TX-SR343 AV Receiver


Click on the image to enlarge and zoom.

This product is no longer available

Onkyo build and develop some of the most highly regarded AV receivers on the market today, being one of the few brands who focus on sound quality and functionality without compromising on either aspect. The company's range of home-cinema hubs are built into a variety of price points, meaning there's a unit for everyone, and each of these units in each of these price categories tend to win awards and hearts alike.

Beneath the TX-SR343's contemporary styled cabinet is Onkyo's intelligent high-current Wide Range Amplification Technology, designed to truly transform your film, television and gaming favourites into an immersive and life-like experience. The most up to date HDMI connections are used, including HDCP 2.2, so that your AV receiver is future proofed and ready for the latest and greatest 4K Ultra-HD content. 

The SR343 is also ready to power and play USB video-subscription streaming services, while specialist components enable for an unbeatable up-scaling to bring new life to older video sources. Bluetooth streaming supports your favourite music, while the high quality Burr Brown DAC ensures that these received files are replayed with accuracy and detail. 

Onkyo have been designing and constructing high end AV equipment for over 50 years, claiming a vast number of awards and critical acclimation across the entirety of their vast product range. Combine this knowledge and experience with once-competitor, Pioneer, the newest Onkyo receivers and AV units can be expected to boast a wealth of unbeatable features and truly astonishing processing capabilities, both in terms of audio and visual elements. 

Beneath the stylish faceplate, the TX-SR343 makes use of Onkyo's high current 'Wide Range Amplification Technology'; designed and engineered to truly immerse the listener into their favourite shows, film,s and games with an standard-setting precision. The receiver also uses state of the art HDMI (2.0a) connections, providing support for HDCP 2.2, allowing the user to stream 4K (UHD) video content, as well as spin 4K Blu-ray discs to their full potential.

The TX-SR343 also features the ability to up-convert analogue video sources (such as VHS video tapes) and send the content through to your television via HDMI for an improved picture quality. For the more modern devices, the unit is capable of Bluetooth streaming with integrated audio optimisation, while a high quality Burr Brown DAC chipset to ensure the music is decoded accurately. .


Amplifier Section   
Front L/R  100 W/Ch (6 Ω, 1 kHz, 1% THD,
1 Channel Driven, IEC)
120 W/Ch (6 Ω 1 kHz, 1% THD,
1 Channel Driven, JEITA) 
 Center 100 W (6 Ω 1 kHz, 1% THD,
1 Channel Driven, IEC)
120 W (6 Ω, 1 kHz, 1% THD,
1 Channel Driven, JEITA) 
 Surround L/R 100 W/Ch (6 Ω, 1 kHz, 1% THD,
1 Channel Driven, IEC)
120 W/Ch (6 Ω, 1 kHz, 1% THD,
1 Channel Driven, JEITA) 
 Dynamic Power 160 W (3 Ω, Front)
125 W (4 Ω, Front)
85 W (8 Ω, Front) 
THD+N (Total Harmonic Distortion + Noise)  0.08% (20 Hz–20 kHz, Half Power)  
 Damping Factor Over 40 (Front, 1 kHz, 8 Ω) 
Input Sensitivity and Impedance  200 mV/47 kΩ (Line) 
 Rated RCA Output Level and Impedance 1 V/470 Ω (Subwoofer Pre Out) 
Frequency Response  10 Hz–100 kHz/+1 dB, -3 dB (Direct Mode) 
Tone Control ±10 dB, 20 Hz (Bass) ±10 dB, 20 kHz (Treble)
Signal-to-Noise Ratio 100 dB (Line, IHF-A)
Speaker Impedance 6 Ω–16 Ω
Video Section  
Input Sensitivity/Output Level and Impedance
1.0 Vp–p/75 Ω (Component Y) 0.7 Vp–p/75 Ω
(Component PB/CB, PR/CR)
1.0 Vp–p/75 Ω
Component Video Frequency Response 5 Hz–13.5 MHz/+0 dB, -3 dB
 Tuner Section  
 Tuning Frequency Range
87.5 MHz–108 MHz 87.5 MHz–107.9 MHz (Taiwan) 
Tuning Frequency Range 
522 kHz–1,611 kHz 530 kHz–1,710 kHz
530 kHz–1,710 kHz (Taiwan) 
 FM/AM Preset Memory 40 Stations 
Power Supply AC 220–240 V~, 50/60 Hz AC 120 V~,
60 Hz (Taiwan Model)
Power Consumption 340 W
No-Sound Power Consumption 35 W
Standby Power Consumption 0.3 W 0.2 W (Taiwan Model)
Dimensions (W x H x D) 435 x 160 x 328 mm
Weight 7.8 kg

There are no reviews for this product yet. Be the first to write a review.

Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at http://www.interlinkexpress.com to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25