Another item from Ricky Young, Quality Artifacts, Springfield, Vermont. Single (1) Audio Research Model M-100 Vacuum Tube Monoblock Mono Power Amplifier. This Audio Research amplifier has just been serviced and is in working condition, however, t. He technician noted that when the amplifier is driven to clipping level, it is supposed to perform a soft clip and go into protection mode, but instead the amplifier clips and the sound distorts. The more efficient the speaker that is used, the less likely one is to encounter this issue.
It could have been fixed by the technician, but I decided to end the service there, because to me, the amplifier is virtually working as it is. Cosmetically, the unit is in great condition with only minor signs of previous use as shown (see pictures).Included is a collection of literature/paperwork. Amplifier Type: Monaural Tube Power Amplifier. Power Output: 100 watts continuous minimum at 16 ohms, from 20Hz to 20kHz with less than 1%. Total harmonic distortion typically below.
Peak Power (at clipping): approximately 115 watts (1kHz). Frequency Bandwidth: (-3dB points) 12Hz to 60kHz. Output Impedances: 4, 8, 16 ohm.
Input Sensitivity: 0.7V RMS for rated output. Input Impedance: 65K ohms, nominal. 2% at 1dB below rated output (100V P to P, 16 ohms - SMPTE method). Hum and Noise: Less than 2mV RMS 90dB below rated output (broad-bandwidth unweighted, inputs shorted). Dimensions: 19 x 18.75 x 7.25 (WxDxH).Unpacked weight & size: 52.60, 19x18.75x7.25. Packed weight & size: 65, 23x23x11. In many cases you may not even need to return it.
The item "Single (1) Audio Research Model M-100 Vacuum Tube Monoblock Mono Power Amplifier" is in sale since Wednesday, October 21, 2020. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps". The seller is "qualityartifacts458" and is located in Springfield, Vermont. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.