Marantz Model 50 + Bowers & Wilkins 703 S3 Stereo Bundle

The Marantz Model 50 is a two-channel integrated amplifier designed for modern stereo systems that require both analogue and digital connectivity, without moving into network streaming or AV receiver territory. It is intended as a traditional hi-fi amplifier for listeners who want flexibility, solid power delivery, and long-term reliability.

The amplifier is rated at 70 watts per channel into 8 ohms and 100 watts per channel into 4 ohms, providing sufficient current capability to drive a wide range of loudspeakers, including more demanding floorstanding designs. The output stage uses Marantz’s discrete current feedback amplifier topology, chosen for its wide bandwidth and fast transient response. This approach is paired with Marantz’s proprietary HDAM (Hyper Dynamic Amplifier Module) circuitry, which replaces conventional op-amps in critical signal paths to improve speed, noise performance, and overall signal integrity.

The Model 50 includes a comprehensive selection of analogue and digital inputs. Analogue connectivity includes multiple line-level inputs as well as a dedicated moving magnet phono input, allowing direct connection of a turntable without the need for an external phono stage. Digital inputs include optical and coaxial connections, along with a USB-A input for playback from compatible storage devices. The internal DAC supports high-resolution PCM audio up to 192 kHz / 24-bit, making the amplifier suitable for use with modern digital sources such as CD transports, televisions, and music streamers.

Tone controls for bass and treble are provided, along with balance adjustment, allowing users to tailor playback to room acoustics or personal preference. A dedicated headphone output with its own amplifier circuit is included for private listening. The amplifier also features a Source Direct mode, bypassing unnecessary circuitry to provide a shorter, cleaner signal path when tone control adjustment is not required.

Physically, the Model 50 is built on a rigid metal chassis designed to reduce vibration and electrical interference. Attention is paid to internal layout, grounding, and component selection to maintain consistent performance over time. The amplifier is designed as a central hub for a dedicated two-channel audio system, prioritising sound quality, usability, and durability over feature overload.

The Bowers & Wilkins 703 S3 is a full-size floorstanding loudspeaker in the 700 Series S3 range, designed to deliver wide-bandwidth performance suitable for high-quality stereo systems and medium to large listening spaces.

High-frequency reproduction is handled by a Carbon Dome tweeter developed specifically for the 700 Series S3. The tweeter is housed in Bowers & Wilkins’ solid-body aluminium enclosure, which is mechanically isolated from the main cabinet. This construction helps reduce cabinet-induced vibration, improving clarity and maintaining consistent performance at higher listening levels.

The dedicated midrange driver uses Bowers & Wilkins’ Continuum cone technology, originally developed for the company’s higher-end loudspeaker designs. The Continuum cone is engineered to avoid the abrupt breakup characteristics of conventional materials, resulting in a more controlled and neutral midrange response. This contributes to improved vocal intelligibility and more accurate reproduction of instruments across the critical mid-frequency range.

Low-frequency performance is provided by twin Aerofoil Profile bass drivers. These drivers use a variable-thickness cone structure that combines stiffness and reduced mass, allowing for greater control and efficiency during cone movement. This design supports deep, controlled bass with reduced distortion, making the 703 S3 suitable for use in larger rooms without the immediate need for a subwoofer.

The cabinet features a revised baffle layout and enhanced internal bracing to minimise resonance and cabinet coloration. Rear-mounted Flowport technology is used to manage airflow from the bass reflex system, reducing turbulence and audible noise during dynamic passages. The dimpled Flowport surface is designed to further improve airflow efficiency, particularly at higher output levels.