RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Crown I-Tech 4000 Power Amplifier - Professionally Restored - 1-Year Warranty1/ OverviewThis listing is for a Crown I-Tech 4000 professional power amplifier, professionally inspected, serviced, and tested by HQaudios. This unit has been prepared for reliable operation while delivering the powerful, clean, and dependable performance that has made Crown professional amplifiers highly respected among audio professionals and enthusiasts.The amplifier has been tested under real operating conditions and is ready to be paired with a compatible professional sound system, passive speakers, or subwoofers.2/ Key HighlightsProfessionally inspected and serviced by HQaudios techniciansFully tested for clean, stable, and reliable operationClean, powerful, and highly accurate professional performanceAll major functions tested before shipmentCarrying-handle assembly serviced and securedExterior professionally cleaned and detailedCarefully packed for safe deliveryBacked by our 1-Year HQaudios WarrantyBasic Specifications2/ SpecificationBrand: CrownModel: I-Tech 4000Type: Professional Power AmplifierPower Output: 1,250 watts per channel at 8 ohms; 2,000 watts per channel at 4 ohmsAudio Inputs: Balanced analog XLR and AES/EBU digitalNetwork / Control Ethernet, HiQnetDimensions: 19.0 x 3.5 x 16.2 inches - W x H x DWeight Approximately 28 lbsCondition: Restored / Serviced / TestedWarranty 1-Year HQaudios Warranty3/ Sound CharacterThe Crown I-Tech 4000 delivers the clean, powerful, and highly accurate performance expected from a professional power amplifier. Designed for efficiency and dependable operation, it provides strong headroom, precise signal reproduction, and consistent output under demanding conditions.Its presentation is controlled and dynamic, with clear midrange reproduction, detailed high frequencies, and strong low-frequency authority. It is well suited for professional sound reinforcement, passive PA speakers, subwoofer systems, and carefully matched high-performance audio applications.4/ Cosmetic ConditionThe amplifier is in excellent cosmetic condition with normal signs of previous use. Please review all photos carefully, as they are part of the description.Front panel: Excellent conditionControls and switches: Excellent conditionTop cover and chassis: Excellent conditionDisplay and indicators: Excellent conditionRear panel: Excellent conditionHQaudios Restoration & Testing Process5/ HQaudios Restoration & Testing ProcessBefore RestorationAfter previous professional use, this Crown I-Tech 4000 required a comprehensive inspection before restoration began.The unit received a detailed inspection covering its exterior condition, power supply, cooling system, amplifier channels, input and output connections, front-panel controls, indicators, and overall operating condition.The signal path, protection circuitry, internal wiring, connectors, cooling performance, and overall functionality were evaluated to identify any areas requiring service.During RestorationBased on the inspection results, this Crown I-Tech 4000 was serviced according to HQaudios' technical standards while preserving its original engineering and professional performance characteristics.The affected carrying-handle assembly was serviced and secured for dependable operation.The input and output connections, protection circuitry, front-panel indicators, controls, cooling system, and internal components were carefully inspected and tested.After the technical work was completed, the exterior was professionally cleaned and detailed.After RestorationOnce the service work was completed, this Crown I-Tech 4000 underwent comprehensive functional testing under real operating conditions.Channel balance, output performance, protection circuitry, cooling operation, front-panel indicators, signal integrity, and audio inputs and outputs were tested.The amplifier underwent extended operational testing through a professional audio system to evaluate reliability, stability, and real-world performance.Only after meeting HQaudios' restoration and testing standards was the amplifier approved and prepared for its next owner.6/ What Is IncludedOne Crown I-Tech 4000 professional power amplifierPower cord and other accessories are included only if shown or specifically statedSpeakers, signal processors, source components, cables, racks, and other equipment shown for demonstration purposes are not included unless specifically stated.7/ Suggested PairingThe Crown I-Tech 4000 is designed for use with compatible professional and high-performance audio systems.Professional PA Systemdbx DriveRack PA2 Loudspeaker Management SystemJBL SRX725 Passive SpeakersLive Sound SystemCompatible digital mixer or signal processorProfessional passive PA speakers or subwoofersHigh-Power Monitoring SystemCompatible preamplifier or monitor controllerPassive loudspeakers rated to handle the amplifier’s available outpuFor best performance, use quality balanced interconnects and properly rated speaker cables. Confirm speaker impedance and power-handling capability before connection, and configure amplifier gain, DSP, limiters, and crossover settings appropriately.8/ Video Test AvailableA video test or operating demonstration may be available upon request. Please contact us directly if you would like additional videos, close-up photos, or assistance confirming compatibility with your audio system.9/ Trade-In WelcomeHQaudios may accept selected audio equipment as a trade-in toward your purchase. Receivers, amplifiers, speakers, turntables, cassette decks, reel-to-reel decks, and professional audio components may be considered depending on model, condition, completeness, and shipping location.Please contact us with clear photos and details of the equipment you would like us to review.10/ Combo DiscountSave $100 when purchasing this amplifier together with a qualifying pair of speakers or another restored audio component from HQaudios. Please contact us before purchase so we can confirm availability and prepare a combined offer.11/ ShippingThis power amplifier will be professionally packed by HQaudios for safe delivery. Professional power amplifiers are heavy and require careful handling, so we take extra care to protect the front panel, controls, corners, rear connections, and internal structure during shipment.Carefully wrapped and protectedHeavy-duty box and protective packing materialsAdditional protection around the front panel, controls, and cornersTracking information provided after shipmentSignature may be required for delivery12/ 1-Year HQaudios WarrantyThis unit is backed by our 1-Year HQaudios Warranty covering normal-use functionality related to the service work performed by HQaudios.The warranty does not cover misuse, improper setup, unauthorized repair, cosmetic wear, damage caused by incompatible equipment, or shipping damage occurring after delivery.Please contact HQaudios first if you experience an operating issue. Our team will review the situation and provide appropriate support.13/ Returns & Buyer SupportPlease inspect the amplifier and packaging promptly after delivery. Contact HQaudios before attempting any repair, modification, internal adjustment, or return shipment.We can assist with system compatibility, input connections, speaker connections, network control, DSP configuration, and general operation. All returned equipment must be packed securely and handled according to the return instructions provided by HQaudios.14/ Important Note for BuyersThis is a professional audio component and may show normal cosmetic signs of previous use. Its safe operation depends on proper system configuration, compatible speaker impedance, suitable power handling, correct wiring, adequate ventilation, and appropriate gain and DSP settings.Please review all photos and the complete description before purchase. Contact HQaudios if you need assistance confirming compatibility with your system.15/ Why Buy From HQaudios?Professional inspection and serviceRestoration work based on the actual condition of the unitFunctional testing before saleCareful packaging for heavy and delicate equipmentAssistance with system setup and compatibility1-Year HQaudios WarrantyOngoing buyer support after deliveryHQaudios - Professional Audio Restored with Care.
Conditioned as professionally restored with a 1-year warranty, this is a polished listing, but the US$1,399 ask is still well above the local market on your comps: it’s more than double the US$611 75th percentile and far above the US$300 median, so I’d call it ambitious rather than fair. It is only the right price if the restoration is substantial and documented, with fresh service, test results, and any replaced modules clearly spelled out.
That said, the appeal is real: this model is a serious pro-grade Crown piece with plenty of output and the kind of reliability reputation that makes restored examples attractive for buyers who want to plug in and go. The warranty adds some value, but at this level I’d want proof of what was actually done, plus confirmation of accessories and any history of wear, because the premium here is mostly being paid for convenience and risk reduction.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Crown Audio traces its origins to 1947 in Elkhart, Indiana, where minister and radio enthusiast Clarence C. Moore, alongside his wife Ruby, founded the International Radio and Electronics Corporation (IREC) in a converted chicken coop. Initially focused on rugged open-reel tape recorders for missionaries in remote regions, the company pioneered innovations like the world's first tape recorder with a built-in power amplifier in 1949. Ruby's suggestion in the 1960s led to the adoption of the Crown name, inspired by the crown emblems on their 'Royal' and 'Imperial' models, with the corporation officially renaming to Crown International, Inc. in 1975.
The brand shifted from tape recorders and compact loudspeakers in the 1950s to standalone tube power amplifiers by 1959, cementing its expertise in professional amplification. Crown became renowned for groundbreaking products like the DC300 in 1968—the first high-power solid-state amplifier—and the M600/M2000 in 1972, featuring patented technologies such as the ground-bridge circuit. Today, under Harman International since its 2000 acquisition, Crown specializes in high-output amplifiers for touring rigs, cinema venues, installed systems, portable PA, and commercial audio, prioritizing reliability and innovation over consumer categories like speakers, turntables, DACs, headphones, or cables.
Crown holds a commanding position as a pro-audio powerhouse, trusted by industry leaders for its durable, high-performance amplifiers that define live sound and installation standards. Far from high-end audiophile or vintage collector fare, it dominates the professional market with over 75 years of technical milestones, though recent production shifts to Mexico reflect ongoing evolution. For the discerning hi-fi buyer eyeing pro-grade power, Crown delivers uncompromised authority.
See all Crown listings on RADAR.
