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Jeff Rowland 112 Power Amplifier
• Overview – The Jeff Rowland 112 Power Amplifier, released in 2004, is a solid state Class AB stereo power amplifier delivering refined power, exceptional control, and the brand’s signature ultra-low noise performance.
• Balanced Circuit Design – Featuring fully balanced circuitry and precision-matched components, the Jeff Rowland 112 Power Amplifier delivers remarkable transparency, expansive soundstaging, and effortless dynamic scaling across demanding loudspeaker loads.
• Precision Power Delivery – With a high-current output stage and robust linear power supply, this amplifier produces authoritative bass control, smooth midrange texture, and refined high-frequency extension without harshness or strain.
• Specifications – Rated at 150 watts per channel into 8 ohms and 300 watts into 4 ohms, balanced XLR and RCA inputs, high-current output stage, frequency response 10Hz–40kHz, signal-to-noise ratio exceeding 90dB.
• Dimensions – Approximately 432 mm wide × 95 mm high × 356 mm deep, housed in a precision-machined aluminum chassis designed for thermal stability and mechanical resonance control.
• Weight – Weighs approximately 15 kg, reflecting its substantial power supply, heavy-duty transformer, and solid billet aluminum construction typical of Jeff Rowland designs.
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Keces Ephono Phonoamp with External Power Supply
• Product Overview – Keces EPhono Phonoamp with External Power Supply, released in 2020, is a solid-state MM/MC phono preamplifier designed for low-noise vinyl playback with precision regulation and audiophile-grade circuit topology.
• Phono Stage Design – The fully discrete solid-state amplification employs ultra-low-noise components and short signal paths, delivering excellent channel balance, high transparency, and accurate RIAA equalisation for demanding analogue enthusiasts.
• External Power Supply Advantage – Separating the power supply from the audio circuitry reduces electromagnetic interference, allowing the Keces EPhono Phonoamp with External Power Supply to achieve superior noise suppression and improved dynamic contrast.
• Specifications – Supports MM and MC cartridges with selectable gain and loading, precision RIAA accuracy within ±0.3 dB, low output impedance, and wide frequency response optimised for high-resolution analogue reproduction.
• Dimensions – Compact dual-chassis design, phono stage approximately 240 mm (W) × 60 mm (H) × 180 mm (D), with matching external power supply sized for flexible placement near turntable systems.
• Weight – Combined weight approximately 3–4 kg, reflecting robust aluminium chassis construction and high-quality internal power regulation components for mechanical stability and long-term reliability.
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Keces Ephono Phono
• Product Overview – The Keces Ephono Phono amplifier, released in 2022, is a solid-state phono stage supporting MM and MC cartridges, engineered for ultra-low noise, tonal neutrality, and precise analogue signal amplification.
• Low-Noise Circuit Design – Featuring fully discrete amplification stages and a linear power supply architecture, the Ephono delivers exceptional background silence, improved microdetail retrieval, and stable, distortion-free performance with high-quality turntable systems.
• Flexible Cartridge Matching – Designed for audiophile versatility, the Keces Ephono Phono amplifier offers adjustable gain and loading options, allowing precise optimisation for a wide range of moving-magnet and moving-coil cartridges.
• Specifications – Supports MM and MC operation, selectable gain levels around 40–65 dB, adjustable MC loading from low ohms to 1kΩ, and high signal-to-noise performance exceeding typical entry-level phono stages.
• Dimensions – Approx. 220 mm (W) × 60 mm (H) × 250 mm (D), compact and rack-friendly, allowing easy integration into modern analogue-focused audio systems.
• Weight – Around 3 kg, reflecting solid internal power regulation and chassis construction that enhances stability and minimizes vibration-related interference.
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Jeff Rowland Consonance Preamplifier
• Preamplifier Overview – The Jeff Rowland Consonance Preamplifier, introduced in the mid-1990s, is a reference solid-state line stage known for its ultra-low noise floor, holographic imaging, and refined tonal balance characteristic of Rowland’s early masterpieces.
• High-Resolution Line Stage – The Consonance employs fully balanced circuitry, premium discrete components, and short signal paths, ensuring exceptional transparency, natural harmonic structure, and impressive dynamic contrast with both solid-state and tube power amplifiers.
• Silent Power Architecture – Featuring Rowland’s renowned attention to power-supply regulation and isolation, the Jeff Rowland Consonance Preamplifier delivers extremely low distortion and stable channel performance, enhancing microdetail retrieval and spatial coherence.
• Precision Build Quality – Machined aluminum chassis, high-grade connectors, and vibration-resistant internal layout reinforce long-term stability, while providing the polished aesthetic and engineering elegance expected from Jeff Rowland designs.
• Dimensions – Approx. 430 mm (W) × 90 mm (H) × 300 mm (D). Designed for compatibility with standard rack systems while maintaining optimal internal airflow and cable management.
• Weight – Approx. 8–10 kg, depending on production revision, offering solid mechanical grounding that minimizes vibration and preserves low-noise signal integrity.
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Jeff Rowland Concentra Integrated Amplifier
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Jeff Rowland Concentra Integrated Amplifier – A masterpiece of Class AB amplification, combining preamplifier finesse and power amplifier control in one chassis for pure, transparent, and emotionally engaging sound reproduction.
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Refined Class AB Topology – Delivers 100W per channel into 8Ω (170W into 4Ω), offering effortless dynamics, exceptional headroom, and authoritative grip across complex musical passages.
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Precision Analog Engineering – Features fully balanced circuitry, ultra-low-noise design, and gold-plated connectors, ensuring perfect signal integrity and channel separation for uncompromised performance.
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Timeless Design and Build – Machined from solid aircraft-grade aluminum, the Jeff Rowland Concentra Integrated Amplifier combines elegance, reliability, and the hallmark sonic purity of Rowland engineering.
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Product Dimensions – 430 mm (W) × 100 mm (H) × 400 mm (D); compact yet substantial for a high-current integrated amplifier.
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Weight – Approximately 22 kg; heavy-duty chassis ensures exceptional stability, heat dissipation, and resonance control.
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Jeff Rowland Design Group is an American high-end audio manufacturer recognised for precision machining, minimalist industrial design, and refined circuit implementation. The brand emphasises power supply integrity and low-noise operation to achieve clarity and control.
Jeff Rowland components are built with exceptional mechanical tolerances and conservative engineering, contributing to long-term stability. This makes pre-owned Jeff Rowland equipment especially attractive to audiophiles seeking reference-grade electronics with enduring value.
Across Singapore, Malaysia, and Southeast Asia, Jeff Rowland is associated with refined, long-term system building. On SoundTribeAsia, Jeff Rowland equipment — new and pre-owned — is offered by verified dealers, providing transparent listings through a trusted regional marketplace.