{"product_id":"focusrite-isa-one-mic-pre","title":"Focusrite ISA One Mic Pre","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eFocusrite ISA One Classic Mic Pre with Independent DI\u003c\/h2\u003e\n\u003cp\u003eThe ISA One microphone preamplifier delivers Focusrite's prestigious ISA transformer-based preamp in a rugged and portable chassis, at a groundbreaking price.\u003c\/p\u003e\n\u003cp\u003eISA One features the classic vintage microphone preamplifier topology from the original ISA110 module, which formed the cornerstone of each channel of Focusrite's legendary Forté console.\u003c\/p\u003e\n\u003cp\u003eThe preamp is complemented by a line input and an independent D.I. channel, complete with dedicated gain control, active or passive impedance switch, a TRS Jack output for routing to an amp and an independent XLR output on the rear. This flexible independent D.I. makes the ISA One ideal both for engineers wishing to blend a D.I.’d guitar signal with a mic’d guitar cabinet, and for demanding performers who require a single classic solution for both guitar and vocals.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eISA series transformer-based preamplifier\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eEncased in a rugged and portable chassis, ISA One offers the classic Focusrite microphone preamplifier at its lowest cost to date.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFlexible independent D.I. channel\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eISA One is ideal for both engineers and demanding performers alike, featuring independent gain control, an output for routing to an amp, an independent XLR output on the rear and routing to the optional A-D converter.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSwitchable impedance\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eChoose one of four carefully selected input impedances, including the original ISA110 setting, to suit any microphone.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHeadphone output with volume control\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eISA One can feed either a sum of the two inputs to the headphones output, or an external stereo cue mix (such as a stereo mix feed from an interface) via two TRS Jack inputs on the rear of the unit.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDedicated insert point\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAllows you to place extra processing between the preamplifier or D.I. and the optional converter, such as an EQ or compressor.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOptional stereo 192kHz A-D converter\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eYou can choose to upgrade your unit with an optional digital card that delivers the best A-D performance in its class (dynamic range of 118dB).\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eWe always quote 'real world' performance figures (measured to the AES17 standard). Some companies choose to quote chipset performance, which is misleading.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMic Input Response\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGain range = 0dB to 60dB in 10dB steps + 20 dB of variable gain\u003c\/li\u003e\n\u003cli\u003eInput Impedance, variable as follows:\u003c\/li\u003e\n\u003cli\u003e(Switched Impedance setting Equivalent Input Impedance at 1kHz)\u003c\/li\u003e\n\u003cli\u003eLow = 600 Ohms\u003c\/li\u003e\n\u003cli\u003eISA110 = 1400 Ohms\u003c\/li\u003e\n\u003cli\u003eMed = 2400 Ohms\u003c\/li\u003e\n\u003cli\u003eHigh = 6800 Ohms\u003c\/li\u003e\n\u003cli\u003eEIN (equivalent input noise) = -126dB measured at 60dB of gain with 150 Ohm terminating impedance and 22Hz\/22kHz band-pass filter\u003c\/li\u003e\n\u003cli\u003eNoise at main output with gain at unity (0dB) = -97dBu measured with a 22Hz\/22kHz band-pass filter\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio relative to max headroom (9dBu) = 106dB\u003c\/li\u003e\n\u003cli\u003eTHD at medium gain (30dB) = 0.0009% measured with a 1kHz -20dBu input signal and with a 22Hz\/22kHz band-pass filter\u003c\/li\u003e\n\u003cli\u003eFrequency response at minimum gain (0dB) = -0.5dB down at 10Hz and -3dB down at 125kHz\u003c\/li\u003e\n\u003cli\u003eFrequency response at maximum gain (60dB) = -3dB down at 16Hz and -3dB down 118kHz\u003c\/li\u003e\n\u003cli\u003eCMRR=98dB (Channel 1, 1kHz, maximum gain with +24 dBu input)\u003c\/li\u003e\n\u003cli\u003eCrosstalk Channel to Channel: with 10dB@1kHz input to chA, chB output =104dBrA. With 10dB@10kHz input to chA, chB output = 84dBrA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eLine Input Response\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGain range = -20dB to +10dB in 10dB steps + 20 dB of variable gain\u003c\/li\u003e\n\u003cli\u003eInput Impedance = 10k? from 10Hz to 200kHz\u003c\/li\u003e\n\u003cli\u003eNoise at main output with gain at unity (0dB) = -96dBu measured with a 22Hz\/22kHz band-pass filter\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio relative to max headroom (24dBu)=120dB\u003c\/li\u003e\n\u003cli\u003eSignal to noise ratio relative to 0dBFS (+22dBu) = 118dB\u003c\/li\u003e\n\u003cli\u003eTHD at unity gain (0dB) = 0.001% measured with a 0dBu input signal and with a 22Hz\/22kHz band-pass filter\u003c\/li\u003e\n\u003cli\u003eFrequency Response at unity gain (0dB) = -0.3dB down at 10Hz and -3dB down at 200kHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eInstrument Input Response\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGain range = 10dB to 40dB continuously variable\u003c\/li\u003e\n\u003cli\u003eInput Impedance:\u003c\/li\u003e\n\u003cli\u003eHigh = greater than1M\u003c\/li\u003e\n\u003cli\u003eLow =greater than 300k\u003c\/li\u003e\n\u003cli\u003eNoise at minimum gain (+10dB) = -92dBu measured with a 22Hz\/22kHz band-pass filter\u003c\/li\u003e\n\u003cli\u003eNoise at maximum gain (+40dB) = -62dBu measured with a 22Hz\/22kHz band-pass filter\u003c\/li\u003e\n\u003cli\u003eTHD at minimum gain (+10dB) = 0.001% measured with a 10dBu input signal and with a 22Hz\/22kHz band-pass filter\u003c\/li\u003e\n\u003cli\u003eFrequency Response at 10dB gain with -10dB input = 10Hz-100kHz +\/- 0.6dB\u003c\/li\u003e\n\u003cli\u003eFrequency Response at 40dB gain with -40dB input = -2.5dB down at 10Hz and 0dB at 100kHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eHigh Pass Filter\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRoll off = 18dB per octave 3 pole filter\u003c\/li\u003e\n\u003cli\u003eFixed Frequency 75Hz measured at the 3dB down point\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eMeters\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMoving coil (MC) meter is factory calibrated to 0VU = +4dBu with 1kHz sinewave. With the VU Cal button pressed the meter can be adjusted on the rear panel to allow 0VU to equal +10dBu to +26dBu with the centre detent being equal to +22dBu.\u003c\/li\u003e\n\u003cli\u003ePeak LED meters calibrated in the detent position for 0dBFS = +22dBu, calibration is adjustable on the rear panel to allow 0dBFS to equal +10dBu to +26dBu\u003c\/li\u003e\n\u003cli\u003eRouting for MC and Peak1 meter is after the HPF, pre insert send or switched post insert return. Peak2 is always pre ADC channel 2, which can be fed by external input or Instrument input.\u003c\/li\u003e\n\u003cli\u003eLED levels are as follows when peak calibration is set to center detent on the rear panel. (This is when using the internal ADC).\u003c\/li\u003e\n\u003cli\u003e0 = +22dBu\u003c\/li\u003e\n\u003cli\u003e-2 = +20dBu\u003c\/li\u003e\n\u003cli\u003e-6 = +16dBu\u003c\/li\u003e\n\u003cli\u003e-12 = +10dBu\u003c\/li\u003e\n\u003cli\u003e-18 = +4dBu\u003c\/li\u003e\n\u003cli\u003e-42 = -20dBu\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eFRONT AND REAR CONNECTIVITY\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAnalogue Channel Inputs:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMic input: XLR x 1\u003c\/li\u003e\n\u003cli\u003eLine input: XLR x 1 and TRS x1\u003c\/li\u003e\n\u003cli\u003eInstrument input TRS Jack: XLR x 1\u003c\/li\u003e\n\u003cli\u003eExternal ADC input: TRS Jack x 1\u003c\/li\u003e\n\u003cli\u003eReturn: TRS Jack x 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eAnalogue Channel Outputs:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSend: TRS Jack x 1\u003c\/li\u003e\n\u003cli\u003eBalanced line output: XLR x 1\u003c\/li\u003e\n\u003cli\u003eDI output: XLR x 1\u003c\/li\u003e\n\u003cli\u003eDI through: TS Jack x 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eAnalogue Channel Additional I\/O:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCue mix left input: TRS Jack x 1\u003c\/li\u003e\n\u003cli\u003eCue mix right input: TRS Jack x 1\u003c\/li\u003e\n\u003cli\u003eHeadphones output: ¼\" TRS Jack x 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eWeight\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3.9kg\u003c\/li\u003e\n\u003cli\u003e8.6Ibs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eDimensions\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e220mm (W) x 104mm (H) x 254 - 290mm (D - top to bottom)\u003c\/li\u003e\n\u003cli\u003e8.66\" (W) x 4.1\" (H) x 10\" - 11.4\" (D - top to bottom)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Focusrite","offers":[{"title":"New","offer_id":31591640629296,"sku":"ISA-ONE","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0277\/2631\/5568\/products\/ISA-ONE.jpg?v=1724156604","url":"https:\/\/shop.solotech.com\/en-uk\/products\/focusrite-isa-one-mic-pre","provider":"Solotech","version":"1.0","type":"link"}