Phono Preamps

{"id":8038264045811,"title":"Cyrus Classic PRE","handle":"cyrus-classic-pre","description":"\u003ch1\u003eCyrus Classic PRE\u003c\/h1\u003e\n\u003ch2\u003e\n The latest update to a preamplifier that has been part of the Cyrus product\n range for over a decade.\n\u003c\/h2\u003e\n\n\u003cp\u003e\nThis preamplifier provides a significant step up in performance from previous\nversions by using everything that Cyrus learnt when developing the fantastic XR\nSeries, but retaining the familiar design of the Classic series. The circuit\ndesign has been completely re-designed and the majority of the internal\ncomponents have been upgraded by the Cyrus R\u0026amp;D team, which has resulted in\nsound improvements that will help the Classic series retain a loyal fan base\nfor years to come.\n\u003c\/p\u003e\n\n\u003ch3\u003eAnalogue Preamplifier\u003c\/h3\u003e\n\n\u003cp\u003e\nThe analogue preamp features relay input selection for the five analogue inputs\nand a precision gain control for volume. The design is intentionally wide\nbandwidth.\n\u003c\/p\u003e\n\n\u003ch3\u003ePhono MM Input\u003c\/h3\u003e\n\u003cp\u003e\nThe phono MM input stage design features dual active gain stages and passive\nRIAA equalisation.\n\u003c\/p\u003e\n\n\u003ch3\u003eBalanced\/Unbalanced Outputs\u003c\/h3\u003e\n\u003cp\u003e\nThe unbalanced outputs are provided for close wired systems where the power\namplifier is located close to the Classic PRE. The balanced outputs are\nrecommended for longer cable runs in systems where the Classic PRE is driving\npower amplifiers placed close to the system speakers or active speakers.\n\u003c\/p\u003e\n\n\u003ch3\u003eHigh Capacity Power Supply\u003c\/h3\u003e\n\u003cp\u003e\nThe Classic PRE power supply includes a 74VA toroidal power transformer\ndelivering power to a high capacity power supply reserve. Within the circuit\ndesign, a total of 11 independent power supply regulators regulate, then\nsub-regulate quiet power. Digital control circuits are assigned a separate\nmains power supply, completely isolated from the signal circuitry.\n\u003c\/p\u003e\n\n\u003ch3\u003ePSX-R Port\u003c\/h3\u003e\n\u003cp\u003e\nThe Classic PRE includes a port for the PSX-R power supply. Power from the\nPSX-R is routed internally to the analogue stages of the preamplifier to\nprovide a more stable, low-noise power supply for the analogue preamp and\npost-DAC stages of the D\/A converter.\n\u003c\/p\u003e\n\n\u003c!-- split --\u003e\n\n\u003ch4\u003ePower Supply\u003c\/h4\u003e\nVoltage: As plate on rear of unit\n\u003ch4\u003ePower Consumption\u003c\/h4\u003e\n\u003cp\u003e\nStandby: \u0026lt;0.5W\u003cbr\u003e\nMaximum: 25W\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003eEnclosure\u003c\/h4\u003e\n\u003cp\u003e\nDimensions (WxHxD): 215 x 75 x 365mm\u003cbr\u003e\nWeight: 4.4kg\u003cbr\u003e\nMaterial: Die cast chassis\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003eLine audio performance\u003c\/h4\u003e\n\u003cp\u003e\nInput Impedance Line: 28kΩ\u003cbr\u003e\nOutput impedance Line: 47Ω\u003cbr\u003e\nOutput impedance Bal (per phase): 47Ω\u003cbr\u003e\nMax input voltage: Line: 2.5V\u003cbr\u003e\nSystem gain Line: 6dB\u003cbr\u003e\nSystem gain Bal: 12dB\u003cbr\u003e\nMax output voltage Line: 2.5V\u003cbr\u003e\nMax output voltage Bal: 5V\u003cbr\u003e\nFrequency Response (-3dB) Line: \u0026lt;0.5Hz, \u0026gt;100kHz\u003cbr\u003e\nSignal to Noise Ratio (unwtd) Line (ref 2V out): 110dB\u003cbr\u003e\nTHD Line (ref 2V out): \u0026lt;0.001%\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003ePhono audio performance\u003c\/h4\u003e\n\u003cp\u003e\nInput Impedance: 47kΩ\u003cbr\u003e\nMax input voltage (1kHz): 25mV\u003cbr\u003e\nPhono stage gain (1kHz): 40dB\u003cbr\u003e\nRIAA tolerance: \u0026lt;0.5dB\u003cbr\u003e\nSignal to Noise Ratio (unwtd) (ref 2V out): 83dB\u003cbr\u003e\nTHD: \u0026lt;0.07%\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003eDigital audio performance\u003c\/h4\u003e\n\u003cp\u003e\nInput voltage: 500mV pk-pk\u003cbr\u003e\nInput Impedance: 75Ω\u003cbr\u003e\nSample rate range (SPDIF): 32k - 192k\u003cbr\u003e\nAudio formats (SPDIF): PCM stereo\u003cbr\u003e\nS\/N ratio (unwtd) (Pre-out, 0dB fs): \u0026gt;97dB\u003cbr\u003e\nTHD (Pre-out, 0dB fs): \u0026lt;0.003%\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003eHeadphone performance\u003c\/h4\u003e\n\u003cp\u003e\nRecommended headphone impedance: 16Ω - 330Ω\u003cbr\u003e\nOutput power (16Ω load): 138mW\u003cbr\u003e\nMax output voltage (330Ω load): 1.85V\u003cbr\u003e\nSignal to Noise Ratio (unwtd) (35mW\/\/16Ω): 90dB\u003cbr\u003e\nTHD (35mW\/\/16Ω): \u0026lt;0.01%\u003cbr\u003e\n\u003c\/p\u003e\n","published_at":"2023-06-14T12:45:03+01:00","created_at":"2023-06-14T12:32:07+01:00","vendor":"James-Morrow Entertainment Systems","type":"Pre-amplifiers","tags":["Cyrus","Phono Preamps","Pre-amplifiers"],"price":259500,"price_min":259500,"price_max":259500,"available":false,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":43805082681587,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"CYRUS-CLASSIC-PRE","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"Cyrus Classic PRE","public_title":null,"options":["Default Title"],"price":259500,"weight":7000,"compare_at_price":null,"inventory_management":"shopify","barcode":"5060020434556","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-01.webp?v=1686742343","\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-02.webp?v=1686742343","\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-03.webp?v=1686742343"],"featured_image":"\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-01.webp?v=1686742343","options":["Title"],"media":[{"alt":null,"id":32107474419955,"position":1,"preview_image":{"aspect_ratio":1.778,"height":1152,"width":2048,"src":"\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-01.webp?v=1686742343"},"aspect_ratio":1.778,"height":1152,"media_type":"image","src":"\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-01.webp?v=1686742343","width":2048},{"alt":null,"id":32107474452723,"position":2,"preview_image":{"aspect_ratio":1.778,"height":1152,"width":2048,"src":"\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-02.webp?v=1686742343"},"aspect_ratio":1.778,"height":1152,"media_type":"image","src":"\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-02.webp?v=1686742343","width":2048},{"alt":null,"id":32107474485491,"position":3,"preview_image":{"aspect_ratio":1.778,"height":1152,"width":2048,"src":"\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-03.webp?v=1686742343"},"aspect_ratio":1.778,"height":1152,"media_type":"image","src":"\/\/james-morrow.com\/cdn\/shop\/files\/CYRUS-CLASSIC-PRE-03.webp?v=1686742343","width":2048}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch1\u003eCyrus Classic PRE\u003c\/h1\u003e\n\u003ch2\u003e\n The latest update to a preamplifier that has been part of the Cyrus product\n range for over a decade.\n\u003c\/h2\u003e\n\n\u003cp\u003e\nThis preamplifier provides a significant step up in performance from previous\nversions by using everything that Cyrus learnt when developing the fantastic XR\nSeries, but retaining the familiar design of the Classic series. The circuit\ndesign has been completely re-designed and the majority of the internal\ncomponents have been upgraded by the Cyrus R\u0026amp;D team, which has resulted in\nsound improvements that will help the Classic series retain a loyal fan base\nfor years to come.\n\u003c\/p\u003e\n\n\u003ch3\u003eAnalogue Preamplifier\u003c\/h3\u003e\n\n\u003cp\u003e\nThe analogue preamp features relay input selection for the five analogue inputs\nand a precision gain control for volume. The design is intentionally wide\nbandwidth.\n\u003c\/p\u003e\n\n\u003ch3\u003ePhono MM Input\u003c\/h3\u003e\n\u003cp\u003e\nThe phono MM input stage design features dual active gain stages and passive\nRIAA equalisation.\n\u003c\/p\u003e\n\n\u003ch3\u003eBalanced\/Unbalanced Outputs\u003c\/h3\u003e\n\u003cp\u003e\nThe unbalanced outputs are provided for close wired systems where the power\namplifier is located close to the Classic PRE. The balanced outputs are\nrecommended for longer cable runs in systems where the Classic PRE is driving\npower amplifiers placed close to the system speakers or active speakers.\n\u003c\/p\u003e\n\n\u003ch3\u003eHigh Capacity Power Supply\u003c\/h3\u003e\n\u003cp\u003e\nThe Classic PRE power supply includes a 74VA toroidal power transformer\ndelivering power to a high capacity power supply reserve. Within the circuit\ndesign, a total of 11 independent power supply regulators regulate, then\nsub-regulate quiet power. Digital control circuits are assigned a separate\nmains power supply, completely isolated from the signal circuitry.\n\u003c\/p\u003e\n\n\u003ch3\u003ePSX-R Port\u003c\/h3\u003e\n\u003cp\u003e\nThe Classic PRE includes a port for the PSX-R power supply. Power from the\nPSX-R is routed internally to the analogue stages of the preamplifier to\nprovide a more stable, low-noise power supply for the analogue preamp and\npost-DAC stages of the D\/A converter.\n\u003c\/p\u003e\n\n\u003c!-- split --\u003e\n\n\u003ch4\u003ePower Supply\u003c\/h4\u003e\nVoltage: As plate on rear of unit\n\u003ch4\u003ePower Consumption\u003c\/h4\u003e\n\u003cp\u003e\nStandby: \u0026lt;0.5W\u003cbr\u003e\nMaximum: 25W\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003eEnclosure\u003c\/h4\u003e\n\u003cp\u003e\nDimensions (WxHxD): 215 x 75 x 365mm\u003cbr\u003e\nWeight: 4.4kg\u003cbr\u003e\nMaterial: Die cast chassis\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003eLine audio performance\u003c\/h4\u003e\n\u003cp\u003e\nInput Impedance Line: 28kΩ\u003cbr\u003e\nOutput impedance Line: 47Ω\u003cbr\u003e\nOutput impedance Bal (per phase): 47Ω\u003cbr\u003e\nMax input voltage: Line: 2.5V\u003cbr\u003e\nSystem gain Line: 6dB\u003cbr\u003e\nSystem gain Bal: 12dB\u003cbr\u003e\nMax output voltage Line: 2.5V\u003cbr\u003e\nMax output voltage Bal: 5V\u003cbr\u003e\nFrequency Response (-3dB) Line: \u0026lt;0.5Hz, \u0026gt;100kHz\u003cbr\u003e\nSignal to Noise Ratio (unwtd) Line (ref 2V out): 110dB\u003cbr\u003e\nTHD Line (ref 2V out): \u0026lt;0.001%\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003ePhono audio performance\u003c\/h4\u003e\n\u003cp\u003e\nInput Impedance: 47kΩ\u003cbr\u003e\nMax input voltage (1kHz): 25mV\u003cbr\u003e\nPhono stage gain (1kHz): 40dB\u003cbr\u003e\nRIAA tolerance: \u0026lt;0.5dB\u003cbr\u003e\nSignal to Noise Ratio (unwtd) (ref 2V out): 83dB\u003cbr\u003e\nTHD: \u0026lt;0.07%\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003eDigital audio performance\u003c\/h4\u003e\n\u003cp\u003e\nInput voltage: 500mV pk-pk\u003cbr\u003e\nInput Impedance: 75Ω\u003cbr\u003e\nSample rate range (SPDIF): 32k - 192k\u003cbr\u003e\nAudio formats (SPDIF): PCM stereo\u003cbr\u003e\nS\/N ratio (unwtd) (Pre-out, 0dB fs): \u0026gt;97dB\u003cbr\u003e\nTHD (Pre-out, 0dB fs): \u0026lt;0.003%\u003cbr\u003e\n\u003c\/p\u003e\n\u003ch4\u003eHeadphone performance\u003c\/h4\u003e\n\u003cp\u003e\nRecommended headphone impedance: 16Ω - 330Ω\u003cbr\u003e\nOutput power (16Ω load): 138mW\u003cbr\u003e\nMax output voltage (330Ω load): 1.85V\u003cbr\u003e\nSignal to Noise Ratio (unwtd) (35mW\/\/16Ω): 90dB\u003cbr\u003e\nTHD (35mW\/\/16Ω): \u0026lt;0.01%\u003cbr\u003e\n\u003c\/p\u003e\n"}