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150W GaN Monoblock Audio Power Amplifier

Starkrimson monoblock audio power amplifier

Starkrimson® Mono - Small but Packs a Massive Punch

Starkrimson monoblock audio power amplifiers were conceptualized to provide the listener with a truly life-like musical experience, presented with every significant detail intact, in order to convey an emotional connection to the music.


Starkrimson amps use the latest state-of-the-art electronics, including gallium nitride (GaN) technology to achieve ultra-high performance in an easy-to-use small package that will easily blend into any decor.

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Starkrimson® Mono Inline

Awkward packaging... Yes, but with good reason. These monoblock amps are made small and with connectors on opposite sides, allowing you to place the amplifier right behind the speaker. This has multiple benefits:

  1. The amplifier has an easier time controlling the speaker; this produces a more accurate sound.
  2. Preserves the amplifier's high damping factor (low output impedance).
  3. Save money on long and expensive speaker cables.

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Reviews

Ron Nagle - Enjoy the Music

"The Orchard amplifiers at $1499.99 set a new benchmark for value, laser-like clarity, and inner detail at this price range. Highly recommended."

and

"Power on and my very first impression was clean and clear music overlapping what was a very dead black background."


Ross Wagner - Stereo Times

"Leo's little guys, boasting the newest GaN (gallium nitride) transistors and modestly priced at $1500 for the pair, lit up the music room."

and

"...dynamic, well defined deep bass, excellent staging, imaging and resolution throughout. All this was maintained through demanding crescendos, with airy upper ranges, while conserving the subtleties of decay- especially welcomed on pizzicato and percussion segments."


Stuart Yaniger - AudioXpress

"At 1 W into an 8 Ω load, the amp’s distortion is below the Audio Precision analyzer’s measurement capabilities."

and

"No matter what sort of music I played from acoustic jazz to Americana-folk to electronic progressive rock, whether my own minimally miked uncompressed recording or highly produced loud studio rock the amplifiers did exactly what they were supposed to, noiselessly, without stress or strain, and in a perfectly transparent way."


Thomas - Thomas & Stereo

"The top end, there is a lot of clarity."

and

"When it comes to instrument separation, it is fantastic."


Adam LaBarge - The Audio Beatnik

"I wanted to stop my heart so I could hear the music better. I was being sucked in, pushed out, and unable to focus on anything else but the music. There were all the little bird-like chimes, dancing between clicks and pings and bongs of xylophone harmonics with dry reed raspy sounds zooming in and out, floating on top of deep rolling strings and organ-like bass. I didn’t want to miss a moment of it."


Jack Roberts - The Audio Beatnik

" I found them very dynamic, very musical, and beautifully detailed in the top end. The tone was better than in many transistor amps. The same could be said about emotional involvement. Listenability was very good with a relaxed and detailed sound. The soundstage and imaging were also very good. "


Paul Rigby - The Audiophile Man

"I immediately noticed a major drop in high frequency noise and a swathe of new air and space within the midrange which pushed open the soundstage, expanding it left and right. All of the reconstruction work of the soundstage created a new level of clarity and transparency."

and

"Sound quality is quite sublime for the price, detail, character, clarity, it’s all there. A fascinating power amplifier and definitely one to investigate."

Specifications

  • Gain: 16.8dB
  • Signal-to-Noise Ratio (SNR): 121dB (A-weighted) 
  • Residual Noise: 32uV (A-weighted) 
  • THD* @ 10W: <0.0003% (-110dB) for 1kHz into 8Ω
  • THD @ 0.25W: <0.0030% for 20Hz - 20kHz into 8Ω
  • THD @ 10W: <0.0013% for 20Hz - 20kHz into 8Ω
  • THD @ 75W: <0.0050% for 20Hz - 20kHz into 8Ω
  • THD @ 150W: <0.015% for 20Hz - 20kHz into 8Ω
  • THD @ 10W: <0.0004% (-108dB) for 1kHz into 4Ω
  • THD @ 0.25W: <0.0030% for 20Hz - 20kHz into 4Ω
  • THD @ 10W: <0.0025% for 20Hz - 20kHz into 4Ω
  • THD @ 75W: <0.0092% for 20Hz - 20kHz into 4Ω
  • THD @ 150W: <0.015% for 20Hz - 20kHz into 4Ω
  • SINAD** @ 5W 1kHz: 107dB into 8Ω
  • SINAD @ 5W 1kHz: 105dB into 4Ω
  • Frequency Response: DC - 80kHz+
  • Sensitivity: 5Vin for 150W into 8Ω
  • Sensitivity: 3.5Vin for 150W into 4Ω
  • Balanced Input Impedance: 44kΩ
  • Single Ended Input Impedance: (w/adapter): 22kΩ
  • Output Power: 150Wrms (300Wpeak) 
  • Damping Factor: >550 @ 1kHz
  • Starkrimson Size: 5.5" (14cm) x 4.8" (12.2cm) x 1.9" (4.8cm) - w/o binding posts
  • Ext.Power Supply Size: 8" (20.4cm) x 3.7" (9.4cm) x 1.72" (4.35cm) - w/o cables
  • Ext. Power Supply Output Voltage: 56VDC
  • Ext. Power Supply Input Voltage: 90 to 264VAC
  • Ext. Power Supply Input Frequency: 47 to 63Hz
  • Idle Power Consumption: 4W


*THD - Total Harmonic Distortion

 **SINAD - Signal-To-Noise And Distortion Ratio

Photo Gallery

Starkrimson® Mono Test Results

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