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Mission

Mission 778x Amplifier with Wharfedale Diamond 12.3 Speakers

Mission 778x Amplifier with Wharfedale Diamond 12.3 Speakers

Regular price £979.00
Regular price £1,048.00 Sale price £979.00
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Details

Description

Mission 778x + Wharfedale Diamond 12.3 Speakers + QED Cables

The Mission 778X is a modern take on a classic Mission amplifier, blending vintage style touches with the features audiophiles expect today. Designed for music lovers who want elegance, flexibility and quality in a compact form, it makes an excellent centrepiece for both serious hi-fi setups and more modest systems.

Despite its half-width chassis, the 778X packs plenty of punch: 45 watts per channel into 8 ohms and 65 watts into 4 ohms. Whether driving medium-sized speakers in a living room or a smaller stand-mount pair in a study, it delivers clean, dynamic sound without strain. Its signal path is refined, with careful attention to distortion, noise floor, and component quality.

For digital lovers, it includes a high-performance ESS Sabre32 DAC, capable of decoding up to 384 kHz PCM and DSD256 via USB, with optical and coaxial inputs up to 192 kHz. Analogue sources are equally well supported: twin RCA line inputs, a dedicated MM (moving magnet) phono stage with low noise, and a front-panel high-drive headphone amplifier make it versatile for turntables, digital streamers, tablets or headphones alike.

Connectivity is generous: USB-B, coaxial, optical, Bluetooth (aptX/AAC), analogue inputs, and useful outputs such as pre-out, meaning you can expand to external power amps or add other gear in time. Large tactile control knobs, LED level indicators, and a well-finished metal case complete the package, adding to the sense of quality and usability.

Wharfedale Diamond 12.3 Speakers

Wharfedale's multi-award winning Diamond 12.3 is a compact floorstanding speaker that delivers in every respect - they sound beautifully balanced, are well made and offer unbeatable value for money.

Key Features:

  • 2.5-Way Configuration: A sophisticated driver setup featuring dual 5" Klarity™ woofers and a 1" textile dome tweeter ensures seamless integration from thunderous bass to sparkling highs.
  • Klarity™ Cone Technology: Wharfedale's proprietary polypropylene/mica composite cones offer remarkable stiffness and low coloration, providing tight, articulate midrange and controlled low-end performance.
  • Slim, Elegant Design: Compact for a floorstander, the Diamond 12.3 fits comfortably in modern living spaces, offering room-filling sound without overwhelming your décor.
  • Advanced Crossover Network: Engineered with precision for optimal phase alignment and a balanced frequency response, ensuring natural, coherent sound at any volume.
  • Beautiful Cabinet Finishes: Available in stylish finishes including Walnut, Black, White, and Light Oak — built with layered MDF for internal resonance control and stunning visual appeal.

Package includes a Free 3m pair of QED XT25 Pre-terminated speaker cables worth £89.95 (see below)

Specifications

Specifications

Mission 778x Specifications

General Description

Stereo Amplifier, Digital-to-Analogue Converter

Design Philosophy and Core Technology

• Integrated Amplifier (45 watts @8 ohms, 65 watts @4 ohms)
• ESS Sabre32 ES9018K2M Reference Chip
• Ultra-low Noise Digital Audio File Compability (384kHz PCM, DSD256) • Bluetooth 5.0 (aptX / AAC) Support
• Dedicated High-performance, Low-noise MM Phono Stage
• Headphone AMP With High-speed Output Signal Transition
• USB Upgrade Support
• Large Tractile Controls With LED Level Indicators

Inputs

1 x Coaxial, 2 x Toslink Optical, 1 x PC USB, 1 x Bluetooth (aptX/AAC),
2 x AUX,1 x RCA (Phono MM)

Outputs

1 x Coaxial, 1 x Toslink Optical, 1 x RCA (PRE Out)

Sampling Frequency

Optical / Coaxial: 44.1kHz-192kHz;
PC USB:44.1kHz-384kHz(PCM) / DSD64, DSD128, DSD256

Preamplifier Section

Gain (max.)

=A8I (Line), +47dB (Phono MM)

Input Sensitivity

540mV (Line, Volume = 0dB); 2.5mV (Phone MM, Volume = 0dB)

Input Impedance

10K (AUX); 47K//100pF (Phono MM)

Total Harmonic Distortion (THD)

<0.003%

Frequency Response (ref. 1kHz)

20Hz-20kHz (±0.1dB)

PRE Output Level

2.1Vrms (max.)

PRE Output SNR

>110dB (A-weighted)

DAC

D to A Converter

ESS Sabre32 ES9018K2M

Resolution

32-bit

Max. Sampling Frequency

Optical/Coaxial: 192kHz;
USB: PCM 384kHz / 11.2896MHz (DSD256)

Total Harmonic Distortion (THD)

< 0.001% (1KHz @ 0dBFS)

Output level (0dBFS, 1KHz)

2.1Vrms

Power Amplifier Section

Gain (max.)

+31dB

Rated Power Output

2x45W(@8ohms); 2 x 65W (@ 4 ohms)

Frequency Response (ref. 1kHz)

20Hz-20KHz (± 0.5dB)

Total Harmonic Distortion (THD)

<0.005% (30W / 8 ohms)

Input Sensitivity

540mV (RCA AUX In); 2.5mV (Phono MM)

Signal-to-Noise Ratio (SNR)

>108dB (ref. 45W, A-weighted)

Crosstalk @1K

>80dB (ref.1W)

Standby Power Consumption

<0.5W

Headphone Amplifier

Total Harmonic Distortion (THD)

< 0.01% (1kHz, 50mW )

Output Impedance

4.7 ohms

Load impedance

20-600 ohms

General

Dimensions (mm) (W x H x D)

236x98x380.6

Carton Size (mm) ( W X H X D)

450x392x175

Net Weight

6.3kg

Finish

Black / Silver

Power requirements (depending on region)

220-240V ~ 50/60Hz; 100-120V ~ 50/60Hz

Standard Accessories

Power Cord, Remote Control, User Manual, Antenna

Wharfedale Diamond 12.3 Specifications 

Enclosure Type

bass reflex

Bass Driver

5"(130mm) advanced PP Cone

Mid-Bass Driver

5" (130mm) advanced PP Cone

Treble Driver

1"(25mm) Textile Dome

AV Shield

No

Sensitivity (2.83V @ 1M)

89dB

Recommended Amplifier Power

30-150W

Peak SPL

102dB

Nominal Impedance

8Ω Compatible

Minimum Impedance

5.0Ω

Frequency Response (+/-3dB)

45Hz ~ 20kHz

Bass Extension (-6dB)

40Hz

Crossover Frequency

2.2kHz

Dimensions (HxWxD)

(925+50) x 180 x (320+28) mm

Net Weight

19.5 kg/pcs

Delivery & Returns

Delivery & Returns

We offer free next day delivery on all orders over £99. For orders under £99 a delivery charge of £7.50 will be applied.

Delivery Times

Cut-off time for next day delivery is 3pm Monday-Friday and 1pm on Saturday. Items ordered after 3pm on Friday will be shipped on Saturday for Sunday delivery. Orders placed after 1pm on Saturday or on Sunday will be despatched on Monday for Tuesday delivery. (please allow an extra day if a bank holiday falls within this period). 

If you would like your delivery on a specific day please call or email us with the details.

Our delivery partner DPD offers an interactive messaging service and will provide a 1-hour time window for your delivery so please provide a mobile phone number where possible.

Some items are not available on a next day delivery service, in these cases the selected product page will display the expected delivery time. If you would like to double check the delivery time prior to ordering please call 01932 851121 or email sales@weybridge-audio.co.uk.

* Remote and offshore locations are excluded from the free delivery service. For these locations we offer a standard 2-3 day delivery
service at £16 per item.

For more detailed info please see delivery information

Cancellations & Returns

At Weybridge Audio we want our customers to be happy with their purchase which is why we offer a 30-day no-hassle return policy on all products purchased through our website. If you would like to return an item please call us on 01932 851121 or email to sales@weybridge-audio.co.uk including your name, address, and original order number. The cost of returning an item is the responsibility of the customer unless the item is faulty in which case we will arrange to collect the faulty item at our expense.

Items must be returned to us in 'as new' condition, complete with all original packaging and accessories. Refunds will be processed within 5 days of receiving the item, subject to the above terms being met.

For more information please see our terms & conditions.