McIntosh MHA150 Headphone Amplifier

Like the MHA100, the MHA150 continues to take advantage of unique McIntosh technologies to create the best possible personal listening experience, regardless of the headphones you use. Autoformer technology found in McIntosh's large mono and stereo amplifiers has been adapted to produce three headphone impedance ranges of 8-40, 40-150 and 150-600 ohms, so that every headphone will receive the legendary McIntosh sound quality and performance.

For connecting digital devices, an optical and coaxial input are included along with the USB and MCT inputs; two analog inputs are also available. Headphone Crossfeed Director (HXD®) brings added dimension to your music in a natural sounding way, but can be turned off depending on your preferences. The MHA150 is smaller than McIntosh's other amplifiers, giving you additional flexibility to locate it almost anywhere in your space. It’s the same width as the MB50 Streaming Audio Player and the two can be combined to start building a complete system.

The MHA150 is powerful and versatile enough to drive a pair of quality desktop or small bookshelf speakers via its 50 watt stereo speaker outputs. Patented Power Guard® technology is included and will prevent clipping that could damage your headphones or speakers. A 5-step Bass Boost Control allows for further sound customization.

The entire unit is housed in a beautiful polished stainless steel chassis that not only compliments the classic glass front panel, knobs and brushed aluminum end caps, but virtually any room decor as well.

• HEADPHONE POWER OUTPUT: High Selection: 1W; Normal Selection: 250mW
• HEADPHONE OUTPUT IMPEDANCE: 8-40 Ohms, 40-150 Ohms, 150-600 Ohms
• POWER OUTPUT PER CHANNEL: 50 Watts
• SPEAKER IMPEDANCE: 8 Ohms
• RATED POWER BAND: 20Hz to 20kHz
• TOTAL HARMONIC DISTORTION: 0.005%
• INTERMODULATION DISTORTION: 0.005% maximum, if the instantaneous peak power is 100 watts or less per channel with both channels operating for any combination of frequencies from 20Hz to 20kHz
• DYNAMIC HEADROOM: 1.5dB
• FREQUENCY RESPONSE: +0, -0.5dB from 20Hz to 20kHz; +0, -3dB from 10Hz to 100kHz
• SENSITIVITY (UNBALANCED / BALANCED): 300mV / 600Mv
• MAXIMUM INPUT SIGNAL (UNBALANCED / BALANCED): 8V / 16V
• SIGNAL TO NOISE RATIO: 105dB
• INPUT IMPEDANCE (BALANCED / UNBALANCED): 25K/25K
• DAMPING FACTOR: >150
• PREAMPLIFIER OUTPUT: 3V (8V maximum)
• PREAMPLIFIER OUTPUT IMPEDANCE: 500 Ohms
• VOLTAGE GAIN: 36.5dB
• POWER GUARD: <2% THD with up to 16dB overdrive at 1kHz
• HEADPHONE OUTPUT: 1 (1/4")
• HIGH LEVEL INPUTS UNBALANCED / BALANCED: 1 Stereo / 1 Stereo
• DIGITAL AES/EBU INPUT: 0
• DIGITAL COAXIAL / OPTICAL / MCT / USB INPUT: 1 / 1 / 1 / 1
• PREAMPLIFIER OUTPUT: 1 Stereo
• DIGITAL AES/EDU INPUT SAMPLE RATE: N/A
• DIGITAL COAXIAL / OPTICAL INPUT SAMPLE RATE: 16Bit, 24Bit - 32kHz to 192kHz
• DIGITAL MCT INPUT SAMPLE RATE: 16Bit, 24Bit - 32kHz to 192kHz
• DIGITAL USB INPUT SAMPLE RATE: 16Bit, 24Bit, 32Bit - 32kHz to 384kHz
• TONE CONTROLS: 5 Step Bass Boost Control: 0 to +12.5dB (in 2.5dB steps) @ 40Hz
• POWER CONTROL INPUT / OUTPUT : Yes
• TUBE OR SOLID STATE: Solid State
• POWER REQUIREMENT: 120V 50/60Hz, 1.5A
• STANDBY POWER REQUIREMENT: <0.25 Watts
• OUTPUT AUTOFORMER: Yes for Headphones
• DIMENSIONS (W X H X D): 11-1/2"(29.2cm) x 5-7/8" (14.9cm) x 18" (45.7cm)
• WEIGHT: 26.5 lbs (12 kg); Shipping Weight 32.5 lbs (14.8 kg)