Arcam PA 410

At 4.5kg, it looks modest on the shelf, but the light weight is no sign of light performance.

Overview

The Arcam PA 410 is a four-channel power amplifier from British hi-fi maker Arcam. It belongs to their "PA" series, built for high-fidelity audio systems. It is compact at 433mm wide, 85mm high and 305mm deep, and it houses a Class AB amplification stage, which multiple sources note for efficient and stable output. Owners report using it in both stereo and surround setups, including modern Atmos speaker arrays. The front panel looks minimalist, with only a single RCA input and one pair of speaker terminals visible, but the internal design drives multiple channels. The PA 410 sits within a lineage of Arcam power amplifiers, though its exact production timeline remains undocumented.

Specifications vary slightly across sources, but they agree on the broad picture. With all four channels driven, it delivers 50 watts per channel into 8 ohms (20Hz-20kHz, 0.2% THD), rising to 70 watts into 4 ohms under the same conditions. With just two channels driven, output goes up to 70 watts into 8 ohms and 100 watts into 4 ohms. That points to a strong power supply that can handle dynamic load demands, which helps in both music and home theater use. Frequency response is rated at 20Hz to 20kHz, and authoritative listings consistently cite total harmonic distortion at 0.2% THD. One outlier claims a much lower THD of around 0.003%, but with no corroboration or context, that figure remains unverified.

Specifications

ManufacturerArcam
Product type4 Channel Power Amplifier
Amplification classClass AB
Power output50W per channel (8 ohms, four channels driven, 20Hz–20kHz, 0.2% THD)
Power output70W per channel (4 ohms, four channels driven, 20Hz–20kHz, 0.2% THD)
Power output100W per channel (4 ohms, two channels driven, 20Hz–20kHz)
Power output70W per channel (8 ohms, two channels driven, 20Hz–20kHz)
Frequency response20Hz to 20kHz
THD0.2% THD
Inputs1 x RCA
Outputs1 x pair of speaker terminals
Dimensions433mm (W) x 85mm (H) x 305mm (D)
Weight4.5kg
Shipping weight40lbs

Collectibility & Value

Current market listings show used units trading between $600 and $750 USD. One outlier listing is marked at $2,950, likely reflecting regional pricing or unusual condition. Retail prices remain active at £1,499 (Fanthorpes HiFi) and $1,650.00 (Audiophile Zone), so the model appears to still be available new through select distributors, though original production dates and MSRP are undocumented. No failures or maintenance concerns unique to the PA 410 are reported in available documentation, though general amplifier issues like thermal stress or power supply degradation may apply over time. Units are also found in new-old-stock form, including some reportedly sold with warranty.

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