The Amp400.8 provides an exceptional level of multichannel amplification. It
is built on the highly advanced Class-D platform, which offers abundant, fast,
controlled, and low distortion power. To reach the needed sonic character and
performance, an in-house designed buffer-stage was added to complement
the merits of the latest Class-D technology. The buffer stage improves the
impedance characteristics and cohesion between the channels, so that speed,
control, neutrality, and ultra-low distortion can come across in an emotionally
Though Amp400.8 was mainly developed for immersive audio, nothing
prevents using it for other multichannel applications as well. As all 8 channels
are identical and discreet it can also also be used in a 2-channel environment
for driving up to 4 pairs of passive speakers. It will equally drive both 8 ohm
and 4 ohm loads, and partners perfectly with all Amphion models. Though
Amp400.8 was developed and optimized for Amphion monitors, it provides
excellent results with wide range of passive speakers. Neutrik XLR and Speakon
connectors offer a convenient and secure way to connect the amplifier to rest of the system.
Honesty in all sizes
Amphion studio monitors are designed for the modern sound-making environment. They assist producers, composers, sound engineers, and artists to reach their goals quicker and with confidence. Amphion products are known for their exceptional tonal balance, clarity, accurate phase response, and pinpoint imaging.
Their advanced acoustic design allows speakers to stay consistent in all acoustic environments. This consistency is present throughout the whole product range and leads into translation which needs to be experienced to be believed.
1 410W per channel for abundant, fast, controlled, and low distortion power for multichannel applications.
2 In-house designed buffer-stage improves sonics and complements the merits of the latest Class-D technology.
3 A perfect partner for all Amphion models and other passive monitors.
Power rating 410 W @ 1 % THD+N, 20 Hz – 20 kHz, 4 Ω (2 channel driven)
205 W @ 1 % THD+N, 20 Hz – 20 kHz, 8 Ω (2 channel driven)
Dynamic range 121.5 dB(A)
Peak output current 20A
THD+N 0.001 % @ 10 W (4 Ω, 100 Hz) SE
Load independent frequency response 34 μV (A-weighted)
Minimum load impedance 3.5 Ω
Amp + power supply efficiency (max) >90 %
Mains Universal mains, auto select (100-240 V, 50-60 Hz)
Certification Safety EN/IEC/UL 62368-1 EMC EN/IEC 55032 (CISPR 32)
Inputs Balanced 3-pin XLR female
Speaker connectors Neutrik Speakon (NL2FX) 2-pole cable
Casing Power 19” rack mountable (3U), high quality aluminium
Power switch Back panel, rocker switch
Measurements (W x H x D) 483 x 133.3 x 317 mm (19” x 3½” x 12½”)
Weight 7.2 kg (16 lbs)