Retro Stereo 50


iFi Audio
Speed and Dynamic Gusto
Universal Design
Expressive Sound

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The Retro Stereo 50 (and LS3.5 bamboo speakers!) create an old-school yet modern vibe for your living or office space.Classic, compact and cutting-edge, it’s an integrated stereo tube (valve) amplifier with a hybrid output stage and an output of 25W per channel.As well as analogue inputs including an excellent phono stage to connect a turntable, it incorporates a hi-res DAC with digital inputs to play music from computers and smart devices.And there’s Bluetooth, too, for those who prefer to stream wirelessly from their smartphones and tablets.

XBass+ cleans up and restores a richer deeper bass line.3D+ helps to recreates the spaceness of a live stage performance.Adjust bass and spatial performance with ease as all signals are processed in the analogue domain. add a pair of connected speakers. Our LS3.5 bookshelf speakers are designed specifically to go with the Retro 50.Whatever you choose, you’ll be immersed in gloriously rich, pitch-perfect, expressive sound.

Wireless Input
Bluetooth (aptX) 1
Digital Input
USB (DSD512/768kHz/2xDXD) 1
Coaxial (192kHz) 1
Optical (192kHz) 1
Analogue Input
Phono(MM/MC Low/MC High/Line 3) 1
Line 1 1
Line 2 1
3.5mm (share with Line 2) 1
Loudspeaker Output 1
3.5mm Headphone Output 1 (Output impedance 3.5mm < 3 Ohm)
6.3mm Headphone Output 1 (Output impedance 6.3mm 25W(majority Class A)
Total Harmonic Distortion(THD) Amplifier 101dB (@ max output)
> Phono MM: 90dB(A)
> Phono MC: 80dB(A)
DAC Dynamic Range > 113dB(A)
Tone Control Bass(100Hz) +/-8dB
Treble(10KHz) +/-8dB
Analogue Signal Processing (ASP) XBass, 3D Holographic
Phono Gain 38, 50, 62dB
MM 220pF//47k
MC 200pF//330R
RIAA Accuracy <0.5dB
Tubes 2 x ECF82; 4 x EL84X
Digital Section
PCM 768/705.6/384/352.8/192/176.4/96/88.2/48/44.1kHz
DSD 512/256/128/64 24.6/22.6/12.4/11.2/6.2/5.6/3.1/2.8MHz
DXD 768/705.6/384/352.8kHz
Filters Minimum Phase (PCM 192/176.4/96/88.2/48/44.1kHz)
Bit Perfect (DXD/PCM 768/705.6/384/352.8)
Analogue (DSD)
Power Supply AC 100V-240V
Power consumption 75W
~0.1W (Standard mode)
Dimensions (W x H x D) 300 x 153 x 226mm
Weight 5.8kg


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