--- product_id: 655212336 title: "A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp" brand: "aiyima" price: "¥51150" currency: JPY in_stock: true reviews_count: 13 category: "Aiyima" url: https://www.desertcart.jp/products/655212336-a70-mono-amplifier-with-pffb-tpa3255-audio-receiver-class-d store_origin: JP region: Japan --- # 600W Mono Power @ 2Ω Multi-Input: RCA, XLR, Trigger Adjustable Low Pass Filter A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp **Brand:** aiyima **Price:** ¥51150 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your sound game — because your sub deserves the spotlight! ## Quick Answers - **What is this?** A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp by aiyima - **How much does it cost?** ¥51150 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/655212336-a70-mono-amplifier-with-pffb-tpa3255-audio-receiver-class-d) ## Best For - aiyima enthusiasts ## Why This Product - Trusted aiyima brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pro-Grade Audio Tech:** Powered by TI’s TPA3255 Class D chip with PurePath Ultra-HD feedback for high fidelity and a 116dB signal-to-noise ratio. - • **Seamless Connectivity:** Supports versatile inputs including RCA, XLR, and 12V trigger for effortless integration with your home theater or DIY audio setup. - • **Tailored Bass Control:** Customizable low pass filter lets you fine-tune your subwoofer’s frequency response on the fly for perfect audio balance. - • **Powerhouse Performance:** Delivers up to 600W mono output with ultra-low distortion (0.001%) for crystal-clear, room-filling sound. - • **Sleek & Durable Design:** Precision-machined metal shell combines a glossy, tactile finish with a compact footprint that fits stylishly in any space. ## Overview The AIYIMA A70 Mono Amplifier is a high-performance Class D audio powerhouse designed for audiophiles and home theater enthusiasts. Featuring TI’s TPA3255 chip, it delivers up to 600W mono output at 2Ω with ultra-low distortion and a wide frequency response. Its compact, metal chassis houses versatile inputs (RCA, XLR, 12V trigger) and an adjustable low pass filter, making it ideal for passive subwoofers and multi-channel setups. Perfect for those who demand professional-grade sound with sleek design and flexible connectivity. ## Description desertcart.com: AIYIMA A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp | with Subwoofer & XLR & RCA Inputs & Trigger input for Home Theater Bookshelf speaker : Electronics Review: Perfect for use with a passive DIY subwoofer. Integrates well with Aiyima A20 2 channel amp - First of all must explain how this amp works. There is a switch on the bottom to set it for full range or subwoofer. When set for subwoofer duty, the front panel knob on the left adjusts the low pass frequency. Great for adjusting by ear while listening to music or test tones. Perfect for use with a passive subwoofer. I see online reviews that complain about the fact that this does not have a high pass filter to use as a full range mono amp. That is not its best use case. I am using mine with a 12" passive subwoofer I built myself and it works great. I think it is a much better amplifier than a lot of the low cost plate amplifiers out there and the cost is very reasonable. I love that these come with 48 volt power supplies instead of the 32-36 volt supplies that some of these low cost amps come with. That way I don't have to spend more money to upgrade to a 48 volt supply. I will add that this mono amp integrates well with the Aiyima A20 stereo amp which has a high pass filter and a subwoofer out. Last note - if bottom switch is set for full range, there is a small knob on the back that sets the low pass frequency for the subwoofer out on the A70. I really only have one possible negative. This works best with a high efficiency 2 or 4 ohm sub - something that can do 90 dB @ 1 watt. My 12" sub does that easily. If you have a small low efficiency sub, then this amp may not produce enough volume. Review: Lacking in many ways - The sound is clean but compared to the Fosi V3 mono amps they don’t compare well. Also the sound stage is not as well defined as the v3 monos I felt they were underpowered. The other office I found was that the knobs on the front were really unnecessary given that most subs today are poewered not passive. ## Features - High-performance amplifier: using professional audio components combined with high-fidelity circuit design technology, it can provide clear and powerful audio output, suitable for music enthusiasts and home theater - Compact and exquisite design: beautifully designed appearance, the metal shell is precision processed, making the product surface delicate and glossy, calm feel, comfortable touch, durable; at the same time, compact design, space-saving, convenient to use in different environments - Multi-input interface compatibility: support a variety of audio inputs, including RCA and XLR inputs, while supporting 12V trigger inputs, one-key synchronization device operation, simple and efficient, can be matched to adapt to a variety of audio equipment - This A70 MONO audio component amplifier use TI's TPA3255 high-performance Class D power amplifier chip,It features an advanced integrated feedback design and proprietary high-speed gate driver error correction(PurePath Ultra-HD).Delivering excellent audio performance while realizing high power outputs;Total Output Power 600W Mono into 2Ω at 10%THD+N in PBTL Configuration,Total Output Power 480W Mono into 2Ω at 1%THD+N in PBTL Configuration - This A70 mono Home audio amplifier achieves unparalleled high performance due to the use of superior components, with low distortion of 0.001%, a signal-to-noise ratio of up to 116dB, and a frequency response of 20Hz-20KHz (±0.5dB) - Outstanding features of the A70 mono hi-fi speaker amplifier, specifically for the RCA input interface to increase the gain of 6dB, add active subwoofer output interface (40-200Hz optional) design, full-range output / passive subwoofer output dual-mode switching to meet your needs to achieve a variety of different scenarios such as mono / 2.0-channel / 5.1-channel / 7.1-channel use,Also it's a home subwoofer amplifier - Package included: 1PC A70 MONO class d monoblock amplifier ; 1 PC DC48V 5A GaN Power adapter; 1 PC User Manual(Note:Trigger input function is not compatible with wiim devices) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DFM7DNVN | | Best Sellers Rank | #129,985 in Electronics ( See Top 100 in Electronics ) #823 in Audio Component Amplifiers | | Brand | AIYIMA | | Built-In Media | 1 PC AIYIMA A70 MONO Amp, 1 PC DC48V 5A Power Adapter, 1 PC User Manual | | Customer Reviews | 4.0 out of 5 stars 80 Reviews | | Item Highlight | with Subwoofer & XLR & RCA Inputs & Trigger input for Home Theater Bookshelf speaker | | Item Weight | 2 pounds | | Manufacturer | YIMA TECH | | Mfr Part Number | A70 MONO | | Model Number | B2D3232B | | Number of Items | 1 | ## Images ![A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp - Image 1](https://m.media-amazon.com/images/I/41RzChCpZoL.jpg) ![A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp - Image 2](https://m.media-amazon.com/images/I/61OnWtin8KL.jpg) ![A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp - Image 3](https://m.media-amazon.com/images/I/61O7j413CiL.jpg) ![A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp - Image 4](https://m.media-amazon.com/images/I/71-k8jHA-RL.jpg) ![A70 Mono Amplifier with PFFB TPA3255 Audio Receiver Class D Amp - Image 5](https://m.media-amazon.com/images/I/61tkPYuNDVL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for use with a passive DIY subwoofer. Integrates well with Aiyima A20 2 channel amp *by M***5 on September 12, 2025* First of all must explain how this amp works. There is a switch on the bottom to set it for full range or subwoofer. When set for subwoofer duty, the front panel knob on the left adjusts the low pass frequency. Great for adjusting by ear while listening to music or test tones. Perfect for use with a passive subwoofer. I see online reviews that complain about the fact that this does not have a high pass filter to use as a full range mono amp. That is not its best use case. I am using mine with a 12" passive subwoofer I built myself and it works great. I think it is a much better amplifier than a lot of the low cost plate amplifiers out there and the cost is very reasonable. I love that these come with 48 volt power supplies instead of the 32-36 volt supplies that some of these low cost amps come with. That way I don't have to spend more money to upgrade to a 48 volt supply. I will add that this mono amp integrates well with the Aiyima A20 stereo amp which has a high pass filter and a subwoofer out. Last note - if bottom switch is set for full range, there is a small knob on the back that sets the low pass frequency for the subwoofer out on the A70. I really only have one possible negative. This works best with a high efficiency 2 or 4 ohm sub - something that can do 90 dB @ 1 watt. My 12" sub does that easily. If you have a small low efficiency sub, then this amp may not produce enough volume. ### ⭐⭐⭐ Lacking in many ways *by M***N on September 13, 2026* The sound is clean but compared to the Fosi V3 mono amps they don’t compare well. Also the sound stage is not as well defined as the v3 monos I felt they were underpowered. The other office I found was that the knobs on the front were really unnecessary given that most subs today are poewered not passive. ### ⭐⭐⭐⭐ Nice for the price *by J***M on October 27, 2025* This amp does a pretty good job. The power supply it comes with is a quality item that delivers it's specified output, and can even supply more than 8.3A. I tested it on my electronic load, but my load is 400W max, which this supply delivered. That was a nice surprise. Chinese supplies I've bought on Amazon before usually provided only half their rated output current. Can the amp deliver its speced power? The ratings don't specify RMS, continuous power, so perhaps it can provide 600W for tiny peaks into 2Ω, but it can't output a sustained 600W. With a 2Ω load, the power supply goes into protection and shuts down at about 315W RMS. With my bench supply, it can deliver about 450W. It draws about 10.2A to do so. But most home subs are 4 or 8Ω, so those unspecified ratings are more useful for many of us. I can increase the output at either 4 or 8Ω until the output waveform begins to distort without the power supply shutting off. Max power at 4Ω is 256 Watts RMS and it begins to clip with 8Ω at 170W. It only draws about 5.5A at clipping, so there is plenty of extra power in the PSU for peaks beyond the RMS ratings. This amp has unusually low input sensitivity. I connected my signal generator to it with an unbalanced TS 1/4", and to fully drive the unit I had to send 8V peak to peak. The rca input has a +6dB gain switch that should almost always be turned on when using this input. ## Frequently Bought Together - AIYIMA A70 Mono Amplifier with PFFB Home Audio Receiver,TPA3255 Class D Amp with Subwoofer for Home Theater Bookshelf Speaker,with XLR & RCA Inputs & Trigger Input - AIYIMA DC48V 10A GaN Power Supply Adapter for TPA3255 Stereo Class D Amplifier A07 & A07 MAX & A08 PRO & A70 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/655212336-a70-mono-amplifier-with-pffb-tpa3255-audio-receiver-class-d](https://www.desertcart.jp/products/655212336-a70-mono-amplifier-with-pffb-tpa3255-audio-receiver-class-d) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-21*