Full Description
The Mission 778x Integrated Amplifier supplies a wide range of connectivity options that deliver refined, precise audio quality. Offering both coaxial and optical inputs, the 778x enables direct connectivity to digital devices, as well as three studio-grade RCA inputs, including a moving magnet (MM) phono input for turntables, enabling exceptional analogue connectivity. Bluetooth also lets you stream your favourite music wirelessly from your smart devices in aptX and AAC codecs.
The 778x provides a Class-AB power amplifier design that houses an efficient 200VA toroidal transformer and delivers a robust sound when demanded. As well as an excellent preamp section to optimise your favourite music, a hi-res onboard DAC enhances your digital audio via the ES9018K2M chipset and offers a sampling rate of up to 384kHz (PCM) and DSD256. The expertly designed rotary controls also enable you to control the volume and select a source, with the stunning LEDs showing the current settings.
The KEF R3 Meta Bookshelf Speakers with Helicon 16 Speaker Cable 6m bundle enhances your favourite music and provides seamless connectivity to your amplifier. The KEF R3 Meta Bookshelf Speakers are ideal for high-performance home audio, inheriting technologies from over sixty years of loudspeaker innovation. Featuring components originally developed for the premium Reference Series speakers – a benchmark for quality – these bookshelf speakers can control a room without dominating its floor space.
The celebrated Metamaterial Absorption Technology (referred to as MAT) optimises the classic KEF Uni-Q Array and diminishes unwanted sound by up to an incredible 99%. This, along with a host of ingenious advancements, keeps distortion to a minimum and widens the listening sweet spot. Get closer to the original sound with the KEF R Series. These speakers have been designed in four distinct colour variations, including black and white gloss, walnut, and special edition indigo, as eye-catching as its sound is gripping. The Wireworld Helicon 16 Speaker Cable will enable clear signal transfer so you can get engrossed in your music.
Package Includes
Mission 778x Integrated Amplifier Specifications
Model
| Model | 778X |
|---|---|
| General Description | Digital-to-Analogue Converter
Stereo Amplifier |
| 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.) | +0dB (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) | 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) | |
| Output level (0dBFS, 1KHz) | 2.1Vrms |
Power Amplifier Section
| Gain | +31dB |
|---|---|
| Rated Power Output | 2 x 45W (@8ohms)
2 x 65W (@ 4 ohms) |
| Frequency Response (ref. 1kHz) | 20Hz-20KHz (± 0.5dB) |
| Total Harmonic Distortion (THD) | 108dB (ref. 45W, A-weighted) |
| Crosstalk @1K | >80dB (ref.1W) |
| Standby Power Consumption |
Headphone Amplifier
| Total Harmonic Distortion (THD) | |
|---|---|
| Output Impedance | 4.7 ohms |
| Load impedance | 20-600 ohms |
General
| Dimensions (mm) (W x H x D) | 236 x 98 x 380.6 mm |
|---|---|
| Carton Size (mm) ( W X H X D) | 450 x 392 x 175 mm |
| Net Weight | 6.3kg |
| Available colours | Black / Silver |
| Power requirements (depending on region) | 220-240V, 50/60Hz; 100-120V, 50/60Hz |
KEF R3 Meta Bookshelf Speakers Specifications
Size and Weight
| Dimensions, including terminals (W x D x H) | 200 x 336 x 422 mm |
|---|---|
| Packaged dimensions (W x D x H) | 591 x 460 x 571 mm |
| Gross weight | 12.4 kg |
| Net weight | 28.4 |
Audio Specifications
| Design | Three-way bass reflex |
|---|---|
| Drive units | Uni-Q Driver Array:
HF: 25 mm (1”) vented aluminium dome with MAT
MF: 125 mm (5 in.) aluminium cone
Bass Unit:
LF: 165 mm (6.5 in.) hybrid aluminium cone |
| Crossover frequency | 420 Hz, 2.3 kHz |
| Frequency range (-6dB)
Typical in-room bass response (-6dB) | 38 Hz – 50 kHz
30 Hz |
| Frequency response (±3dB) | 58 Hz – 28kHz |
| Harmonic distortion (90dB, 1m) | <1 73 Hz and above
|
| Maximum output | 110 dB |
| Amplifier requirements | 15 – 180W |
| Nominal impedance | 4 Ω (min. 3.2 Ω) |
| Sensitivity (2.83V/1m) | 87 dB |
General
| Model | R3 Meta |
|---|---|
| Finishes | Black Gloss
White Gloss
Walnut
Indigo Gloss Special Edition |
Wireworld Helicon 16 Speaker Cable Specifications
General
| Design | Dual DNA HELIX® |
|---|---|
| Signal Conductors | Qty: 2 (8 strand groups)
Gauge: 16AWG
1.25 sq. mm |
| Conductor Material | Oxygen-Free Copper |
| Insulation | COMPOSILEX® 3 |
| Plug Contracts | Silver-clad Uni-Term |
| Specifications | Cable Diameter: 6mm
Uni-Term Socket: 16mm |
| Part Code | HES |



























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