Roksan Audio Ltd Caspian 4G Integrated Amplifier
Image source — © Roksan Audio Ltd
Model name
Caspian 4G Integrated Amplifier
Type
Integrated Amplifier with DAC and Phonostage
Analog inputs (balanced)
1
Analog inputs (single-ended)
2
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
N/A
Input impedance (single-ended) (Ω)
47 000 (Phono)
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
D/A conversion
N/A
Phono MM/MC current-sensing input impedance (Ω)
N/A
Output power (8Ω) (W)
105
Output power (4Ω) (W)
200
Gain (dBu)
29 + 53 (Phono)
Frequency response low +/- 3dB (Hz)
20
Frequency response high +/- 3dB (Hz)
20 000
Signal to Noise Ratio (dB)
>85
Total Harmonic Distortion + Noise (%)
<0.007
Damping factor
N/A
Dimensions (mm)
93 x 432 x 378
Weight (kg)
15.2
Official link
The amplifier operates in the AB-class and is equipped with a linear power supply unit with a massive 400 VA toroidal transformer, which can output 80 watts per channel at 8 ohms and 130 watts at a four-ohm load. In addition to the two linear analog inputs, the amplifier has two optical and two coaxial digital inputs, the latter allowing decoding of the PCM stream from MQA. Digital-to-analog conversion up to 24/192 is implemented on a Burr Brown chip. The aptX Bluetooth wireless connection ensures stable transmission of music content from mobile devices at a distance of up to 15 meters.
The integrated amplifiers of the new Caspian 4G series use Roksan's proprietary Euphoria Class AB amplification technology, which, according to the developer, "combines power and elegance." This technology uses separate power sources for current and voltage amplifiers to achieve a clearer sound. The analog preamp section in the new series has also undergone a major upgrade.
The Roksan Attesa Streaming Amplifier combines an AB-class integrated amplifier and a modern player-streamer equipped with a highly efficient network module. The module is based on the progressive BluOS operating system, which allows integrating this model into a wireless multiroom ecosystem with the ability to play up to sixty-four separate music zones and access to numerous web radio stations and online services, including Spotify Connect, TIDAL Connect, Deezer, Qobuz, HDtracks, HighResAudio, etc. BluOS makes it possible to transmit Hi-Res audio over the air in a resolution of up to 24 bit/192 kHz.