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musical instrument details
Aphex Thermionics Model 1100 2-channel Class A Tube Mic Preamp + A/D Converter
Estimated price for orientation: 970 $
Category: Preamps and Channel Strips
Class:
Description Condition: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition UPC: Does not apply
Awesome mic pre. Sounds killer. Has some scratches / cosmetic wear. Includes power cable.From Pro Sound —"FeaturesThe 8.2 lb. single-rack-space Model 1100 is both audibly and visually stunning. The shiny chrome-plated rack ears offset the deep blue faceplate, which is covered with clearly labeled knobs and buttons. The 1100 boasts a maximum output level of +27 dBu unloaded with 65 dB gain and an equivalent input noise (EIN) of -135 dBu. Additional headroom (up to 20 dB) is available by using the microphone limiter (MicLim) circuit. The MicLim circuitry, unique to Aphex, deserves a close look. It features an exclusive optical attenuator operating directly on the microphone input line. The MicLim circuit smoothly attentuates the microphone output signal prior to the preamplification by up to 20 dB. The peak limit detector is located after the preamplifier input stage and feeds a control current back to the attenuator so that the input signal remains below clipping. The MicLim has no effect whatsoever on the input signal until the preamplifier's output approaches clipping.The front panel's nearly identical controls for the 1100's two channels each feature two knobs, seven buttons and a recessed line output calibration pot. The knobs are brushed aluminum and easy to grip with just the right amount of resistance. My only complaint is that in low lighting situations it is difficult to see where they are set. The 12-position gain knob adjusts gain in 4 dB increments from 21 dB to 65 dB. The 12-position low cut knob sets the frequency for low-cut filter. The first position is off, followed by frequency selections from 30 Hz to 195 Hz.The low cut circuit contains a second order modified Butterworth response. This optimizes the sonic effectiveness of the filter. It is the best sounding and most flexible low cut filter I have encountered on a preamplifier.The row of seven buttons is in a recessed section of the front panel, preventing accidental button pushing. The pad button activates a 20 dB pad. A light above the button indicates if the pad is on. The polarity button reverses the signal polarity. The tone button activates a -20 dB, 700 Hz reference tone. To prevent accidental test tone activation, Aphex designed the function so the tone button must be held down continuously for at least one second before the tone is activated.The phantom button activates 48 V phantom power. The 48 V source ramps up and down over five seconds to avoid thumps. The mute button activates a soft switch that silences both the digital and analog outputs. The MicLim button activates the Aphex-proprietary limiting module. This circuit limits the peak level to completely prevent clipping for input levels up to approximately 20 dB beyond the normal clipping level.The clock source button is the seventh button on the first channel; it selects the A/D converter's clock source as either internal or external. If external is selected, the clock information is taken from the rear panel BNC clock input jack.There is an LED that lights when the clock is present and locked. The internal rate button is the seventh button on the second channel; it selects the A/D converter's sample rate when the clock is set to internal. The choices are 44.1 kHz, 48 kHz and 96 kHz. When the clock is set to external, the sample rate is set automatically.Both channels include 20-segment LED meters that indicate the output signal's peak level below the point of clipping. They also include a recessed potentiometer that attenuates the analog line output stage gain from 0 to ö12 dB, allowing the preamp's gain to be matched with other equipment.Power to the Aphex 1100 is via an IEC connector on the rear panel. Voltage can be changed from 100/120VAC to 220/240VAC by simply reversing the voltage card and switching the fuse. The power on/off switch is mounted on the front panel.The rear panel of the 1100 has a male XLR connector for AES/EBU digital audio output. Two BNC jacks (word clock in and word clock out) are mounted on the rear panel to permit multiple 1100s to be daisy-chained together from a master clock source. Two more female XLR connectors provide for microphone input and two male XLR connectors for line level output.Two 1/4" TRS jacks offer parallel output. Both channels have nominal output reference switches that insert a 12 dB pad into the output line when activated. This allows the 1100 to interface more effectively with semi-pro equipment. Each channel is equipped with a 1/4" mute jack. Plugging a switch into this jack allows the preamp to be remotely muted (both the analog and digital output).”Shipping price listed is for shipping to a street address in the contiguous USA and includes shipping, packing materials, & insurance, as well as signature confirmation for purchases requiring it.Please contact me within 24 hours of receiving the item if there are any problems with it or the package. Please save the box and packing materials for insurance purposes.Available for free pick-up in Los Angeles, CA if paid in cash at time of pickup as Paypal no longer considers pickup a valid shipping method.Yes -- I try to combine shipping for multiple items purchased at the same time. Please message me about specific auctions.
Description
| Condition: | Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition | UPC: | Does not apply |
Awesome mic pre. Sounds killer. Has some scratches / cosmetic wear. Includes power cable.From Pro Sound —"FeaturesThe 8.2 lb. single-rack-space Model 1100 is both audibly and visually stunning. The shiny chrome-plated rack ears offset the deep blue faceplate, which is covered with clearly labeled knobs and buttons. The 1100 boasts a maximum output level of +27 dBu unloaded with 65 dB gain and an equivalent input noise (EIN) of -135 dBu. Additional headroom (up to 20 dB) is available by using the microphone limiter (MicLim) circuit. The MicLim circuitry, unique to Aphex, deserves a close look. It features an exclusive optical attenuator operating directly on the microphone input line. The MicLim circuit smoothly attentuates the microphone output signal prior to the preamplification by up to 20 dB. The peak limit detector is located after the preamplifier input stage and feeds a control current back to the attenuator so that the input signal remains below clipping. The MicLim has no effect whatsoever on the input signal until the preamplifier's output approaches clipping.The front panel's nearly identical controls for the 1100's two channels each feature two knobs, seven buttons and a recessed line output calibration pot. The knobs are brushed aluminum and easy to grip with just the right amount of resistance. My only complaint is that in low lighting situations it is difficult to see where they are set. The 12-position gain knob adjusts gain in 4 dB increments from 21 dB to 65 dB. The 12-position low cut knob sets the frequency for low-cut filter. The first position is off, followed by frequency selections from 30 Hz to 195 Hz.The low cut circuit contains a second order modified Butterworth response. This optimizes the sonic effectiveness of the filter. It is the best sounding and most flexible low cut filter I have encountered on a preamplifier.The row of seven buttons is in a recessed section of the front panel, preventing accidental button pushing. The pad button activates a 20 dB pad. A light above the button indicates if the pad is on. The polarity button reverses the signal polarity. The tone button activates a -20 dB, 700 Hz reference tone. To prevent accidental test tone activation, Aphex designed the function so the tone button must be held down continuously for at least one second before the tone is activated.The phantom button activates 48 V phantom power. The 48 V source ramps up and down over five seconds to avoid thumps. The mute button activates a soft switch that silences both the digital and analog outputs. The MicLim button activates the Aphex-proprietary limiting module. This circuit limits the peak level to completely prevent clipping for input levels up to approximately 20 dB beyond the normal clipping level.The clock source button is the seventh button on the first channel; it selects the A/D converter's clock source as either internal or external. If external is selected, the clock information is taken from the rear panel BNC clock input jack.There is an LED that lights when the clock is present and locked. The internal rate button is the seventh button on the second channel; it selects the A/D converter's sample rate when the clock is set to internal. The choices are 44.1 kHz, 48 kHz and 96 kHz. When the clock is set to external, the sample rate is set automatically.Both channels include 20-segment LED meters that indicate the output signal's peak level below the point of clipping. They also include a recessed potentiometer that attenuates the analog line output stage gain from 0 to ö12 dB, allowing the preamp's gain to be matched with other equipment.Power to the Aphex 1100 is via an IEC connector on the rear panel. Voltage can be changed from 100/120VAC to 220/240VAC by simply reversing the voltage card and switching the fuse. The power on/off switch is mounted on the front panel.The rear panel of the 1100 has a male XLR connector for AES/EBU digital audio output. Two BNC jacks (word clock in and word clock out) are mounted on the rear panel to permit multiple 1100s to be daisy-chained together from a master clock source. Two more female XLR connectors provide for microphone input and two male XLR connectors for line level output.Two 1/4" TRS jacks offer parallel output. Both channels have nominal output reference switches that insert a 12 dB pad into the output line when activated. This allows the 1100 to interface more effectively with semi-pro equipment. Each channel is equipped with a 1/4" mute jack. Plugging a switch into this jack allows the preamp to be remotely muted (both the analog and digital output).”Shipping price listed is for shipping to a street address in the contiguous USA and includes shipping, packing materials, & insurance, as well as signature confirmation for purchases requiring it.Please contact me within 24 hours of receiving the item if there are any problems with it or the package. Please save the box and packing materials for insurance purposes.Available for free pick-up in Los Angeles, CA if paid in cash at time of pickup as Paypal no longer considers pickup a valid shipping method.Yes -- I try to combine shipping for multiple items purchased at the same time. Please message me about specific auctions.