{"product_id":"mahi-monoblock-amplifier-pair","title":"Mahi Monoblock Amplifier (Pair)","description":"\u003cp data-start=\"0\" data-end=\"507\"\u003eThe Manley MAHI Monoblock is a compact, all tube power amplifier created for listeners who value clarity, musicality, and precise system matching. Sold as a matched pair, each monoblock powers a single channel, ensuring complete channel separation and a focused, immersive soundstage. Designed to drive high efficiency loudspeakers, the MAHI is hand assembled in California and reflects Manley’s commitment to thoughtful engineering and refined craftsmanship for both home and studio listening environments.\u003c\/p\u003e\n\u003cp data-start=\"509\" data-end=\"1062\"\u003ePowered by an EL84 push pull output stage, the MAHI offers switchable Triode and Ultra Linear modes to suit different listening preferences. In Triode mode, it delivers 20 watts with a rich midrange presence and natural dimensionality that complements vocals and acoustic recordings. Ultra Linear mode increases output to 40 watts, providing greater headroom, tighter control, and dynamic authority for more demanding material. A three position negative feedback control allows you to fine tune damping and tonal balance to match your speakers and room.\u003c\/p\u003e\n\u003cp data-start=\"1064\" data-end=\"1399\" data-is-last-node=\"\" data-is-only-node=\"\"\u003ePremium components such as German WBT binding posts and carefully selected tubes support long term reliability and consistent performance. The result is a pair of monoblock amplifiers that balance warmth, speed, and control in a compact footprint, offering an engaging and customizable listening experience for discerning music lovers.\u003c\/p\u003e\n\u003cp data-start=\"1064\" data-end=\"1399\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompact Monoblock Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDedicated single-channel construction ensures complete channel separation for pure, focused sound in a space-saving form.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSold as a Matched Pair\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSupplied as two monoblocks for true stereo performance with optimal channel separation and balanced sound.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePure Vacuum Tube Amplification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll-tube circuitry delivers natural warmth, rich tone, and immersive musicality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwitchable Triode and Ultra-Linear Modes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose between a sweeter, more intimate presentation or a more powerful, dynamic sound to match your music and mood.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdjustable Negative Feedback Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFine-tune the amplifier’s character from open and fluid to tight and controlled for ideal speaker matching.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for High-Efficiency Speakers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOptimized to bring out the best in sensitive loudspeakers with lively dynamics and detailed imaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEL84 Output Stage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRenowned EL84 tubes provide a smooth midrange, expressive dynamics, and engaging tonal balance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnhanced Power Authority\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRobust power supply design delivers strong bass control and confident transient response.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHand-Assembled Craftsmanship\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBuilt in California with carefully selected components for long-term reliability and refined performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePremium Build Quality\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh-grade connectors and parts ensure secure connections and consistent, high-fidelity sound.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Home and Studio Use\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIdeal for audiophile listening rooms and professional environments seeking clear, dimensional sound.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDevice Type: Vacuum Tube Monoblock Power Amplifier\u003c\/p\u003e\n\u003cp\u003eConfiguration: Monoblock\u003c\/p\u003e\n\u003cp\u003eSold As: Matched Pair\u003c\/p\u003e\n\u003cp\u003eAssembly Location: California, USA\u003c\/p\u003e\n\u003cp\u003eOperating Modes: Triode, Ultra-Linear\u003c\/p\u003e\n\u003cp\u003eOutput Stage: Push-Pull EL84 Pentode\u003c\/p\u003e\n\u003cp\u003eRecommended Speaker Load: Optimized for 5 Ω\u003c\/p\u003e\n\u003cp\u003eInput Impedance: 110 kΩ\u003c\/p\u003e\n\u003cp\u003eDynamic Range: 83 dB\u003c\/p\u003e\n\u003cp\u003eSignal-to-Noise Ratio: 82 dB A-weighted (ref. 1W, 20 Hz–20 kHz)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTubes (Per Monoblock)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInput Tube: 1 × 12AT7EH (Electro-Harmonix, large plate)\u003c\/p\u003e\n\u003cp\u003eDriver Tube: 1 × 12BH7EH or 6414\u003c\/p\u003e\n\u003cp\u003eOutput Tubes: 4 × EL84 (ships with NOS EL84M \/ 6P14P-EB)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBias \u0026amp; Operating Conditions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOutput Tube Quiescent Current: 25 mA\u003c\/p\u003e\n\u003cp\u003eBias Setting: 250 mVDC across 10 Ω cathode resistor\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGain\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFB MIN: 30.7 dB (Triode), 32.1 dB (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eFB STD: 28.5 dB (Triode), 29.1 dB (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eFB MAX: 26.1 dB (Triode), 27.1 dB (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNegative Feedback\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMIN: 3 dB\u003c\/p\u003e\n\u003cp\u003eSTD: 6 dB\u003c\/p\u003e\n\u003cp\u003eMAX: 10 dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Sensitivity (Max Output @ 1.5% THD, 1 kHz)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFB MIN: 175 mV (Triode), 155 mV (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eFB STD: 312 mV (Triode), 340 mV (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eFB MAX: 480 mV (Triode), 566 mV (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eInput Sensitivity (1W into 8 Ω): 61 mV, 53 mV\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Output Power (@ 1.5% THD, 1 kHz)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInto 5 Ω — FB MIN: 18W (Triode), 20W (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eInto 5 Ω — FB STD: 27W (Triode), 42W (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eInto 5 Ω — FB MAX: 28W (Triode), 46W (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eInto 8 Ω — FB MIN: 14W (Triode), 24W (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eInto 8 Ω — FB STD: 24W (Triode), 40W (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eInto 8 Ω — FB MAX: 25W (Triode), 41W (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDistortion\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTHD+Noise @ 5W: \u0026lt; 0.15%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFull Power, UL Mode, MAX NFB: 20 Hz – 20 kHz (flat)\u003c\/p\u003e\n\u003cp\u003e5W into 5 Ω: 10 Hz – 30 kHz (flat), –3.75 dB @ 100 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNoise Floor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e150 µV (–74 dBu A-weighted)\u003c\/p\u003e\n\u003cp\u003e650 µV (–62 dBu unweighted)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFB MIN: 1.22 Ω (Triode), 1.35 Ω (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eFB STD: 0.80 Ω (Triode), 0.83 Ω (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eFB MAX: 0.54 Ω (Triode), 0.54 Ω (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFB MIN: 4.10 (Triode), 3.70 (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eFB STD: 5.45 (Triode), 4.78 (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003eFB MAX: 9.26 (Triode), 9.26 (Ultra-Linear)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Requirements\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIdle Power Consumption: 102 W (0.85A @ 120VAC)\u003c\/p\u003e\n\u003cp\u003eMaximum Power Consumption: 168 W (1.4A @ 120VAC)\u003c\/p\u003e\n\u003cp\u003eOperating Mains Voltage: 100V, 120V, or 220–240VAC (factory configured)\u003c\/p\u003e\n\u003cp\u003eMains Frequency: 50–60 Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFusing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMains Fuse @ 117VAC: 3A 3AG slow-blow, Littelfuse Series 239\u003c\/p\u003e\n\u003cp\u003eMains Fuse @ 230VAC: 1.6A 3AG slow-blow, Littelfuse Series 239\u003c\/p\u003e\n\u003cp\u003eB+ Fuse: MDA 400 mA Slo-Blo, ceramic time-delay\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDimensions: 11 in (D) × 10 in (W) × 5 in (H)\u003c\/p\u003e\n\u003cp\u003eShipping Weight: 18 lbs (each)\u003c\/p\u003e","brand":"Manley","offers":[{"title":"Blue","offer_id":62808966135967,"sku":null,"price":9400.0,"currency_code":"CAD","in_stock":true},{"title":"Black","offer_id":62808966168735,"sku":null,"price":9400.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5532\/6111\/files\/21627_full_87476d64-c446-4a14-be95-ddbdd4acaf9f.jpg?v=1780695893","url":"https:\/\/altitudoaudio.ca\/products\/mahi-monoblock-amplifier-pair","provider":"Altitudo Audio","version":"1.0","type":"link"}