Focusrite ISA828 8-Channel Microphone Preamp. The ISA828 eight channel microphone pre-amplifier provides eight original ISA transformer-based pre amps in a single robust 2U chassis, offering the Focusrite signature sound at its lowest cost per channel to date. The eight ISA-series transformer-based microphone pre amps feature the same classic microphone pre-amplifier design as the original ISA110 module from Focusrite's critically acclaimed Forte console (including the original Lundahl L1538 transformer and bespoke zobel network). The pre-amps are complemented by eight line inputs, eight line outputs and an optional eight channel 192kHz ADC boasting the widest dynamic range of any converter to date. Thanks to its convenient 25 pin D-Type connectors, the ISA828 also integrates quickly and seamlessly with ProTools HD, as well as other popular hard disc recorders and mixing desks.The microphone input stage additionally includes a variable impedance circuit, allowing the user to switch between four carefully selected input impedance settings. The original ISA110 setting is supplemented by three further impedance settings to either perfectly match the pre-amp with any microphone, thus maximizing level, or to use different settings creatively to shape the sound of the microphone being used. We always quote'real world' performance figures (measured to the AES17 standard).
Some companies choose to quote chipset performance, which is misleading, and here's why. Gain range: 0dB to 60dB in 10dB steps Input Impedance, variable: 600? Gain range: -20dB to +10dB in 10dB steps Input Impedance: 10k? From 10Hz to 200kHz Noise at main output with gain at unity (0dB): -96dBu measured with a 22Hz/22kHz bandpass filter Signal to noise ratio relative to max headroom (24dBu): 120dB Signal to noise ratio relative to 0dBFS(+22dBu): 118dB THD at unity gain (0dB): 0.001% measured with a 0dBu input signal and with a 22Hz/22kHz bandpass filter Frequency Response at unity gain (0dB): 0.3dB down at 10Hz and 3dB down at 122kHz.
Gain range: 10dB to 40dB continuously variable Input Impedance: 1M? Noise at minimum gain (+10dB): -90dBu measured with a 22Hz/22kHz bandpass filter Noise at maximum gain (+40dB): -62dBu measured with a 22Hz/22kHz bandpass filter THD at minimum gain (+10dB): 0.002% measured with a 10dBu input signal and with a 22Hz/22kHz bandpass filter Frequency Response at 10dB gain with -10dB input: 10Hz-200kHz +/- 0.6dB Frequency Response at 40dB gain with -40dB input: -2.5dB down at 10Hz and 0dB at 200kHz. Roll off: 18dB per octave 3 pole filter Fixed Frequency 75Hz measured at the 3dB down point.484mm (W) x 85mm (H) x 305mm (D) (350mm depth with heat sink) 19" (W) x 3.5" (H) x 12" (D) (13.8" depth with heat sink). This mint condition product includes the original packaging, manual, and all original accessories. Merchandise and packaging MUST be in the same condition as when received. Alto Music reserves the right to refuse any return if it appears the item has been used. Software (if unsealed or registered).
Harmonicas, Mouthpieces, Earbuds/Earphones/Headphones(if unsealed), or any item that may come in contact with the mouth, ears or nose. There are no warranties for the following items. BEST OFFERS - Please submit offers directly using the "make an offer" button. We will consider your offer as soon as it is received.
We will then either accept, decline, or counter accordingly. Please do not send a message or call Alto Music in regards to best offers. If a specific listing of ours does not include the "make an offer" button, we are then currently not accepting anything less than the BIN price for that particular item. The item "Focusrite ISA828 8-Channel Microphone Preamp" is in sale since Monday, April 9, 2018.
This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "altomusicpro" and is located in Middletown, New York. 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, China, Sweden, South Korea, Indonesia, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Mexico, New Zealand, Singapore, Switzerland, Norway, Ukraine, Croatia, Malaysia.