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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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Fostex FE208
• Product Overview – Fostex FE208, released in 2002, is a high-sensitivity full-range driver designed for horn and back-loaded enclosures, prized for coherence, speed, and lifelike midrange reproduction.
• Sound Character – Designed for single-driver enthusiasts, this unit delivers exceptional immediacy, dynamic expression, and phase coherence, making it ideal for low-power tube amplifiers and minimalist signal paths.
• Driver Design – The FE208 features a lightweight paper cone, whizzer cone, and powerful ferrite motor system, enabling fast transient response and extended midrange clarity without crossover-induced phase distortion.
• Specifications – Nominal impedance is 8 ohms with sensitivity around 96 dB/W/m, supporting wide bandwidth performance and high efficiency, particularly suited for horn-loaded or high-efficiency loudspeaker designs.
• Dimensions – Driver diameter approximately 208 mm with standard mounting depth suitable for horn or large cabinet designs, allowing flexible integration into custom loudspeaker enclosures.
• Weight – Each driver weighs approximately 3 kg, with a rigid frame and motor assembly contributing to mechanical stability and controlled resonance behavior.
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NBS Omega IV Speaker Cable (2.8m)
• Product Overview – NBS Omega IV Speaker Cable, released in the early 2010s, is a flagship reference speaker cable designed to maximize signal purity, dynamic realism, and tonal density in ultra-high-end audio systems.
• Conductor & Dielectric Design – Utilizing NBS’s proprietary rectangular solid-core conductors and advanced dielectric materials, the cable minimizes skin effect, phase distortion, and energy storage for superior coherence and musical flow.
• Sonic Performance – NBS Omega IV Speaker Cable delivers exceptional soundstage scale, explosive dynamics, and profound low-frequency authority while preserving microdetail, harmonic richness, and natural timbre across complex recordings.
• Specifications – Ultra-low resistance and inductance geometry, heavy-gauge multi-conductor architecture, high-current capability, and precision-terminated spades or bananas optimized for reference amplifiers and full-range loudspeakers.
• Dimensions – Available in various custom lengths, typically supplied in 2.0–3.0 meter stereo pairs, with substantial cable diameter reflecting its complex internal conductor and shielding structure.
• Weight – Approximately 4–5 kg per stereo pair depending on length, indicating massive conductor mass, dense dielectric layering, and mechanically damped outer jackets.
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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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Yamaha NS-1000M
• Overview – The Yamaha NS-1000M, introduced in 1974, is a legendary studio monitor famed for its beryllium dome midrange and tweeter, delivering exceptional transparency, transient accuracy, and reference-level neutrality for critical listening.
• Beryllium Drivers – Featuring Yamaha’s iconic 3 cm beryllium tweeter and 8.8 cm beryllium midrange, the NS-1000M provides ultra-fast response, superb micro-detail, and minimal coloration—qualities that made it a worldwide studio standard.
• Controlled Bass Performance – Equipped with a 30 cm woofer in a rigid sealed enclosure, the NS-1000M achieves tight, articulate bass with excellent timing, ideal for both analytical and musical listening environments.
• Precision Monitor Heritage – The Yamaha NS-1000M remains sought after for its highly accurate soundstage, exceptional build quality, and ability to reveal upstream component changes with absolute clarity and honesty.
• Dimensions – Each speaker measures approximately 395 mm (W) × 675 mm (H) × 326 mm (D), offering a substantial enclosure optimized for neutrality and controlled resonance.
• Weight – Each cabinet weighs around 31 kg, contributing to its stable acoustic behavior and resistance to unwanted vibrations in demanding monitoring setups.
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Yamaha A-S501
• Integrated Amplifier Overview – The Yamaha A-S501 is a Class AB integrated amplifier delivering clean, dynamic power with natural tonal balance and excellent control, offering a highly musical foundation for mid- to upper-level stereo systems.
• Amplification & Circuit Design – Featuring a discrete Class AB topology, ToP-ART chassis layout and high-quality audio-grade components, the Yamaha A-S501 provides low distortion, strong transient response and smooth, detailed presentation across all genres.
• Connectivity & System Integration – With optical, coaxial, multiple analogue inputs, phono stage and subwoofer output, the Yamaha A-S501 supports wide system compatibility, enabling flexible integration with turntables, streamers and digital transports.
• Performance & Listening Characteristics – Delivering 85W per channel into 8 ohms, the Yamaha A-S501 offers tight bass, articulate mids and crisp highs, maintaining clarity and rhythm even with demanding loudspeaker loads.
• Product Dimensions – The Yamaha A-S501 measures 435 mm (W) × 151 mm (H) × 387 mm (D), providing a substantial chassis engineered for stability, efficient heat management and vibration resistance.
• Product Weight – Weighing approximately 10.3 kg, the Yamaha A-S501 benefits from a solid power supply and rigid internal bracing, enhancing mechanical grounding and improving overall sonic performance.
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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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Fostex is a Japanese audio brand with deep roots in professional audio, transducer design, and precision manufacturing. Known for its work in loudspeaker drivers, studio monitors, and headphones, Fostex places strong emphasis on efficiency, accuracy, and controlled sound reproduction.
Fostex products are widely used across both consumer and professional environments, with many designs remaining in production or active use for extended periods. This longevity makes pre-owned Fostex equipment particularly relevant, as well-maintained drivers and headphones continue to deliver consistent performance long after release.
On SoundTribeAsia, Fostex equipment — new and pre-owned — is offered by verified dealers, allowing buyers to access trusted listings and transparent condition details through a curated regional marketplace.