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Discover the exceptional sound quality of the MAHI Monoblock Power Amplifier, designed to bring out the best in your audio system. With its nimble and lively performance, the MAHI delivers 20 Watts in TRIODE mode and 40 Watts in Ultra-Linear mode, thanks to custom transformers engineered and wound at Manley Labs. The Variable Feedback switch provides a range of sonic options, from sweet and seductive to powerful and rockin’. Sold in pairs, the MAHI Monoblocks are a testament to Manley Labs' dedication to superior audio engineering.


Key Features:

  • Powerful Performance: Produces 40 watts RMS in Ultra-Linear mode or 20 watts in TRIODE mode using EL84 tubes.
  • Custom Transformers: Manley Output transformers engineered and wound in-house ensure top-tier sound quality.
  • Variable Feedback: Adjust the feedback to tailor the sound to your preferences, with settings for minimal, standard, and maximum feedback.
  • Durable Construction: Designed for long-lasting performance with reliable, high-quality components.


Design and Evolution:

The MAHI Monoblocks are a culmination of over a decade of EL84 amplifier development at Manley Labs. The EL84 tubes are favored for their quick-sounding response in both the bass and top end, akin to their larger sibling, the EL34. These amplifiers draw on the design refinements introduced in the acclaimed Manley Stingray and Snappers, incorporating enhanced circuitry and increased B+ rail capacity for superior bass performance.


R182 100,00Price
  • Input Tube (each monoblock): 1 x 12AT7EH (Electro-Harmonix)
  • Driver Tube (each monoblock): 1 x 12BH7EH (or 6414)
  • Output Tubes (each monoblock): 4 x EL84 (ships with Russian NOS EL84M)
  • Output Tube Quiescent Standing Current: 25mA
  • Input Impedance: 110 kOhm
  • Negative Feedback: 3dB (MIN), 6dB (STD), 10dB (MAX)
  • Gain:
    • FB MIN: 30.7 dB TRIODE; 32.1 dB UL
    • FB STD: 28.5 dB TRIODE; 29.1 dB UL
    • FB MAX: 26.1 dB TRIODE; 27.1 dB UL
  • Input Sensitivity for Maximum Output Power:
    • FB MIN: 175mV TRIODE; 155mV UL
    • FB STD: 312mV TRIODE; 340mV UL
    • FB MAX: 480mV TRIODE; 566mV UL
  • Input Sensitivity for 1W into 8 Ohms: 61mV TRIODE; 53mV UL
  • Maximum Output Power (1.5% THD @ 1kHz):
    • Into 5 Ohms: FB MIN: 18W TRIODE; 20W UL, FB STD: 27W TRIODE; 42W UL, FB MAX: 28W TRIODE; 46W UL
    • Into 8 Ohms: FB MIN: 14W TRIODE; 24W UL, FB STD: 24W TRIODE; 40W UL, FB MAX: 25W TRIODE; 41W UL
  • Signal to Noise Ratio Ref. 1W: Typically 82 dB A-WGT 20-20K
  • Noise Floor: Typically 150µV = -74dBu A-WGT; 650µV = -62dBu unweighted
  • Dynamic Range: 83dB
  • THD+Noise @ 5W: <0.15%
  • Frequency Response: 10 Hz - 30 kHz FLAT, -3.75dB @ 100KHz
  • Recommended Speaker Load: Optimized for 5 Ohms
  • Output Impedance:
    • FB MIN: 1.22 Ohms TRIODE; 1.35 Ohms UL
    • FB STD: 0.80 Ohms TRIODE; 0.83 Ohms UL
    • FB MAX: 0.54 Ohms TRIODE; 0.54 Ohms UL
  • Damping Factor:
    • FB MIN: 4.10 TRIODE; 3.70 UL
    • FB STD: 5.45 TRIODE; 4.78 UL
    • FB MAX: 9.26 TRIODE; 9.26 UL
  • Power Consumption (idle): 102 Watts (0.85A @ 120VAC)
  • Maximum Power Consumption: 168 Watts (1.4A @ 120VAC)
  • Operating Mains Voltage: Factory set for 100V, 120V, or 220-240VAC operation.
  • Mains Voltage Frequency: 50 ~ 60 Hz
  • Dimensions: 11" deep x 10" wide x 5" tall
  • Shipping Weight (each): 18 lbs
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