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MBL N51 Integrated Amplifier
Specifications: MBL N51 Integrated Amplifier
• Type: Integrated amplifier
• Output Power: 380 W per channel (4 Ω), 200 W per channel (8 Ω)
• Class of Operation: Class A / AB hybrid
• Inputs: 3 × RCA (unbalanced), 2 × XLR (balanced)
• Outputs: 1 × RCA pre-out, 1 × XLR pre-out
• Frequency Response: 0.3 Hz – 330 kHz (-3 dB)
• THD: < 0.01% • Damping Factor: 200
• Input Impedance: 47 kΩ
• Dimensions (W × H × D): 45 × 17 × 40 cm
• Weight: 35 kg
• Made in Germany
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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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Siltech Ruby Mountain 2 Power Cable (1.5m)
• Overview – Siltech Ruby Mountain 2 Power Cable, released in 2002, is a high-end power cord engineered to reduce noise, improve current delivery, and enhance musical clarity in reference audio systems.
• Conductor Technology – Utilises Siltech’s proprietary G7 silver-gold alloy conductors with advanced dielectric insulation, delivering low resistance, excellent conductivity, and superior preservation of micro-dynamics and tonal purity.
• Sonic Performance – Siltech Ruby Mountain 2 Power Cable delivers a quieter noise floor, improved bass authority, enhanced midrange texture, and refined treble extension, benefiting amplifiers, source components, and digital front ends.
• Specifications – Features multi-strand G7 silver-gold conductors, heavy shielding for EMI and RFI rejection, high-current capability up to 16A, and premium connectors ensuring secure contact and consistent power transfer.
• Dimensions – Typically supplied in 2.0 m length, with a thick, flexible jacket designed for durability and ease of routing in high-end audio racks and power distribution setups.
• Weight – Approximately 1.0 kg for a 2.0 m cable, reflecting dense conductor geometry, advanced shielding layers, and robust connector construction.
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Revel Ultima Salon 2
• Product Overview – Revel Ultima Salon 2, released in 2008, is a flagship four-way floorstanding loudspeaker engineered for absolute neutrality, extreme dynamic range, and reference-level accuracy in high-end listening environments.
• Acoustic Design – Advanced waveguide geometry, titanium tweeter, ceramic composite midrange, and multiple aluminum-cone woofers deliver seamless integration, wide dispersion, and exceptionally low distortion across the entire frequency spectrum.
• Sonic Performance – Revel Ultima Salon 2 offers deep controlled bass, holographic imaging, and tonal realism, excelling with complex orchestral passages while preserving micro-detail and transient precision at all listening levels.
• Specifications – Four-way design with dual 8-inch woofers, one 8-inch mid-bass, 4-inch midrange, and 1-inch tweeter; sensitivity approximately 86 dB, nominal impedance 6 ohms.
• Dimensions – Each speaker measures approximately 1190 mm (H) × 350 mm (W) × 460 mm (D), providing substantial cabinet volume for extended bass response and optimized driver loading.
• Weight – Each Revel Ultima Salon 2 loudspeaker weighs approximately 77 kg, reflecting massive internal bracing, thick cabinetry, and vibration-controlled construction for uncompromised acoustic performance.
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MBL N15 Monoblock
• Product Overview – MBL N15 Monoblock, released in 2019, is a solid-state Class AB monaural power amplifier delivering high-current authority, extreme stability, and effortless control for reference-grade loudspeaker systems.
• Amplification Architecture – Fully balanced signal topology with oversized power supplies ensures low noise, exceptional channel separation, and unwavering performance under demanding loads, reflecting MBL’s Noble Line engineering philosophy.
• Sonic Performance – MBL N15 Monoblock delivers immense dynamic headroom, deep bass grip, and expansive soundstage reproduction, maintaining tonal neutrality and composure even at high listening levels.
• Specifications – Rated at approximately 200 W into 8 ohms and 400 W into 4 ohms, with high-current output stages optimized for difficult speaker impedances and wide bandwidth signal handling.
• Dimensions – Each chassis measures approximately 480 mm (W) × 170 mm (H) × 480 mm (D), designed to integrate seamlessly into high-end audio racks while supporting robust internal power architecture.
• Weight – Each monoblock weighs approximately 33 kg, reflecting heavy-duty transformers, extensive heatsinking, and rigid construction essential for long-term thermal stability and sonic consistency.
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Revel Performa F32
• Revel Performa F32 Engineering – The Revel Performa F32 is a three-way floorstander using advanced waveguides and low-distortion drivers to deliver neutral, accurate, and dynamically expressive sound suitable for demanding audiophile systems.
• Refined Driver Architecture – Featuring dual 6.5-inch woofers, a dedicated midrange unit, and an aluminum-dome tweeter, the F32 achieves outstanding clarity, wide bandwidth, and low compression even at higher listening levels.
• Exceptional Tonal Accuracy – Designed through extensive double-blind evaluation, the Performa F32 produces a remarkably linear response with smooth off-axis behaviour, ensuring consistent performance across diverse room acoustics.
• Dynamic and Controlled Bass – The F32 delivers tight, extended bass through optimized port tuning and rigid cabinet design, offering authoritative low-frequency presence without sacrificing speed or control.
• Dimensions – Approx. 1,100 mm (H) × 267 mm (W) × 330 mm (D), providing a slim profile that fits comfortably into modern listening spaces while maintaining strong acoustic performance.
• Weight – Each speaker weighs about 33 kg, supporting reduced vibration, improved driver stability, and enhanced resolution across the frequency spectrum.
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MBL C51 Integrated Amplifier
• MBL C51 Integrated Amplifier – This premium Class AB integrated amplifier combines high-current power delivery with MBL’s signature refinement, offering holographic imaging, smooth dynamics, and authoritative control suitable for demanding loudspeaker systems.
• Advanced Pre/Power Architecture – The C51 uses discrete circuitry, ultra-low-noise voltage regulation, and precision volume control to ensure exceptional signal purity, delivering lifelike tonal accuracy and outstanding microdynamic resolution.
• High-Current Output Performance – MBL C51 Integrated Amplifier is rated at 180W into 8Ω and 300W into 4Ω, the C51 provides excellent stability, grip, and transient impact, enabling it to drive complex speaker loads effortlessly and musically.
• Premium Noble Line Engineering – Borrowing from MBL’s flagship designs, the C51 features robust internal layout, resonance-optimized chassis construction, and meticulous parts selection to ensure consistent high-end performance.
• Dimensions – Approx. 440 mm (W) × 183 mm (H) × 390 mm (D). The sculpted Noble Line chassis provides superior mechanical stability and ventilation for reliable long-term operation.
• Weight – Approximately 28 kg, offering excellent mass damping and structural rigidity that enhances noise reduction and overall sonic refinement.
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MBL N11 Preamplifier and N21 Stereo Power Amplifier
• MBL N11 Preamplifier and N21 Stereo Power Amplifier – This flagship Noble Line pairing delivers exceptional refinement, with the N21 operating in Class AB to provide authoritative drive, holographic imaging, and MBL’s signature musical realism.
• Ultra-Low-Noise Preamplifier Design – The MBL N11 employs discrete gain stages, precision resistive ladder volume control, and advanced isolation topology, ensuring absolute signal purity, superior dynamic contrast, and effortless tonal accuracy.
• High-Current Power Capability – The MBL N21 outputs 250W into 8Ω and doubles into 4Ω, offering exceptional control, stability, and dynamic reach, allowing demanding loudspeakers to perform with scale and composure.
• Noble Line System Synergy – When paired, the N11 and N21 deliver seamless coherence, expansive sound staging, and deep microdynamic detail, embodying MBL’s renowned ability to recreate live, full-bodied, three-dimensional musical presence.
• Dimensions – N11: approx. 440 × 92 × 390 mm (W × H × D).
N21: approx. 440 × 210 × 460 mm. Both share the distinctive Noble Line geometry and robust internal architecture.
• Weight – N11 approx. 12 kg; N21 approx. 38 kg. Heavy, resonance-controlled chassis construction enhances mechanical stability, lowers noise, and maximizes overall sonic performance.
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MBL 116F Radialstrahler Loudspeaker
• Omnidirectional Loudspeaker Overview – The MBL 116F Radialstrahler Loudspeaker delivers full-range 360-degree radiation with exceptional coherence, holographic staging and organic musical flow, offering a truly immersive high-end listening experience for advanced systems.
• Radialstrahler Driver Architecture – Using MBL’s patented Radialstrahler transducers, the design produces uniform dispersion, natural tonal density and lifelike spatial imaging, with one mention of MBL 116F Radialstrahler Loudspeaker across the system description.
• Bass System & Dynamic Behaviour – Featuring dedicated woofers and a powerful low-frequency chamber, the speaker provides deep, controlled bass, outstanding transient speed and exceptional dynamic scaling, with one additional mention of MBL 116F Radialstrahler Loudspeaker.
• Cabinet Engineering & Vibration Control – The rigid, multi-chamber enclosure minimises resonances while supporting seamless driver integration, allowing improved clarity, stable imaging and highly accurate reproduction across complex acoustic environments.
• Product Dimensions – Each loudspeaker measures approximately 1,200 mm (H) × 310 mm (W) × 430 mm (D), offering a sculptural footprint designed for ideal dispersion and room placement flexibility.
• Product Weight – Weighing around 50–55 kg per speaker, the substantial cabinet structure enhances mechanical stability, reduces coloration and supports superior bass definition and overall acoustic performance.
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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.