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I need a Pre-Amp with volume, bass, and treble controls designed for professional audio equipment. Additionally, I require a 2-way and 3-way Active Cross-Over that is variable, paired with a high-power Class D Power Amplifier capable of delivering between 100W to 500W. The setup should be suited for professional audio applications. Key Requirements: - Features: Pre-Amp with Volume, Bass, Treble, and Variable Active Cross-Over (2-way and 3-way) - Inputs supported: XLR and RCA - Power Output: 100W to 500W Class D Power Amp Preference: - Engineers located in India Ideal Skills and Experience: - Expertise in designing Pre-Amplifiers and Class D Power Amplifiers - Experience with Active Cross-Overs (both 2-way and 3-way) - Knowledge of professional audio equipment design and integration - Proven track record in high-power audio amplifier projects. Please provide portfolios and relevant experience.
Project ID: 40586439
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Active 7 days ago
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10 freelancers are bidding on average ₹20,775 INR for this job

Hi, Hope you are well. It sounds like a great job and aligns with where I'd like to take my career. I'm eager to learn more. I have experience over the past fifteen years as a PCB Design Engineer at Global Engineering services and RWR Private Ltd. You can visit my freelancer profile page; https://www.freelancer.com/u/ahsanfreelancer7 I’ve been consistently committed to Specific goals, skills or traits the new job entails. Could we schedule some time to discuss about opportunity in more detail? I’d welcome the opportunity to learn more about the role and share how my skills and experiences would benefit you. I’m available to talk at any time. I look forward to speaking with you. Best, AHSAN ULLAH
₹25,000 INR in 5 days
6.4
6.4

Hi there, I read your offer carefully and understand that you need a professional Class-D audio amplifier with bass/treble tone control, XLR and RCA inputs, and 100W–500W output capability. I can support the complete amplifier architecture, including balanced/unbalanced input stages, NE5532-style tone control, Class-D power stage, power supply design, protection circuits, PCB layout, thermal management, BOM, and manufacturing files. I have experience with audio electronics, Class-D amplifier design, preamp/tone-control circuits, high-power PCB layout, and production-ready hardware documentation. Just send me a message and we can discuss the exact power target and design requirements. Best regards, Samuel Tshibangu
₹25,000 INR in 1 day
6.4
6.4

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq
₹25,000 INR in 10 days
5.3
5.3

Hello, I am Santosh Chaulagain, a professional Electrical Engineer and PCB Designer with over 7 years of experience in schematic design, PCB layout, and embedded systems, including ESP32, IoT devices, analog and digital circuits. I have successfully completed multiple projects for clients worldwide, delivering reliable and manufacturable designs. I have carefully reviewed your project requirements and I am confident that I can provide a high-quality solution tailored to your needs. My expertise includes PCB design using industry standards, component selection, BOM preparation, Gerber generation, and design optimization for cost and performance. I always ensure that my designs are fabrication-ready and tested for reliability. I focus on clear communication, timely delivery, and customer satisfaction. I am happy to discuss your project in detail and provide revisions until the final result meets your expectations. Looking forward to working with you. Best regards, Santosh C. Electrical Engineer | PCB Designer | ESP32 & IoT Specialist
₹20,000 INR in 10 days
3.7
3.7

I would like the opportunity to work on your High-Power Class D Audio Amplifier project. I have experience in electronics, circuit design, and professional audio system development, including analog pre-amplifier circuits, active crossover design, power amplifier integration, and PCB design. I can design a complete solution featuring a pre-amplifier with volume, bass, and treble controls, variable 2-way/3-way active crossover, XLR and RCA inputs, and a Class D power amplifier in the 100W–500W range. The design will prioritize low noise, reliability, efficient thermal performance, and professional audio quality. I will provide the required schematics, PCB design, BOM, and complete documentation, and I can also assist with prototype testing and refinement if needed. Give me one opportunity to handle your project. I assure you that I will complete the work with full dedication, accuracy, and professionalism. I am confident that my skills and experience will meet your expectations and deliver high-quality results on time.
₹12,500 INR in 7 days
0.6
0.6

Hey, I think you would like to read this. I understand you're looking for a high-power Class D audio amplifier with tone control features. My experience in designing high-performance audio equipment aligns perfectly with your needs. I specialize in creating amplifiers that deliver robust power output while ensuring clarity and precision for professional audio applications. By collaborating with me, you can expect: - A custom-designed Class D amplifier tailored to your specifications - Seamless integration of XLR and RCA inputs - Rigorous testing to guarantee reliability and performance - Comprehensive documentation for ease of use I would like to discuss more about the project. You lose nothing by reaching out. Additionally, if you create milestones, your payment will be fully protected, and you can use this message as proof for a full refund if needed. Kind Regards, Riyaat
₹33,750 INR in 7 days
0.0
0.0

Hi, I'd love to work on your project. I have experience designing high-performance audio electronics, including Class D amplifier circuits, power supply integration, and PCB design for professional audio applications. I can design a Class D amplifier with **100W–500W output**, integrated **bass and treble tone controls**, and **XLR/RCA inputs**, optimized for low distortion, high efficiency, and reliable performance. The deliverables will include complete schematics, PCB layout, BOM, and production-ready design files suitable for manufacturing and testing. I'd be happy to share similar electronics and audio hardware projects from my portfolio. Best regards, Diksha L
₹15,000 INR in 3 days
0.0
0.0

Hi, I've gone through your requirements and the TI reference you shared. I wouldn't build a direct copy of the EVM; I'd use it as a validated power-stage reference and design the rest of the system around your performance goals. My approach would be a modular architecture consisting of a low-noise preamp with Baxandall tone control, a variable 2-way/3-way Linkwitz-Riley active crossover, and a stereo TPA3255-based Class D power stage. The PCB would be optimized for low EMI, low THD, proper grounding, thermal management, and stable operation with 6ohm I'd also like to understand the target sound signature you're after—studio neutral or Hi-Fi warm—as that influences the analog front-end design and component selection. If we're building this as the first product in a family, I'll design the architecture so it's easy to scale to higher power versions in the future. Let's discuss the specifications in detail before freezing the schematic.
₹13,500 INR in 7 days
0.0
0.0

Kolkata, India
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