Marantz Model 50 + Bowers & Wilkins 702 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 702 S3 is the flagship floorstanding loudspeaker in the 700 Series S3 range, developed to deliver full-range performance suitable for high-quality stereo systems and larger listening spaces.

High-frequency reproduction is handled by a Carbon Dome tweeter, developed specifically for the 700 Series. The tweeter is housed in a solid aluminium enclosure that is mechanically decoupled from the main cabinet. This design reduces the transfer of vibration from the cabinet to the tweeter, helping to improve clarity, reduce distortion, and maintain consistency at higher listening levels.

The midrange driver uses Bowers & Wilkins’ Continuum cone technology, which was originally developed for the company’s higher-end loudspeaker ranges. The Continuum cone is designed to avoid the abrupt breakup behaviour associated with traditional cone materials, resulting in a more controlled and neutral midrange response. This contributes to improved vocal clarity and more accurate reproduction of instruments across the critical mid-frequency range.

Bass performance is delivered by dual Aerofoil Profile bass drivers. These drivers use a variable-thickness cone structure that provides stiffness where required while reducing mass in other areas of the cone. This approach allows the drivers to move with greater control and efficiency, supporting deeper bass extension with reduced distortion. The dual-driver configuration also helps the 702 S3 deliver sufficient low-frequency output for medium to large rooms without reliance on a subwoofer.

The cabinet design incorporates a redesigned baffle layout and enhanced internal bracing to minimise unwanted resonance and cabinet coloration. Rear-mounted Flowport technology is used to manage airflow from the bass reflex system, reducing turbulence and audible chuffing during dynamic passages. The Flowport surface dimples are designed to improve airflow efficiency, particularly at higher output levels.