4D Furnishers HSWA-300 300 Watts RMS Wired Single SubWoofer Amplifier Black Color for Subwoofers Upto 12 inches (Update 20.06.2024)

Update: The seller (Mr Ketan) was very helpful and kept his promise of repairing the amp under warranty. I had to only pay for the courier service which came to Rs 600. This amp is great and is better than class D amps like the Fosi Audio TP-02 (which I also own). Going from that Fosi to this, did feel like a step up. Will update this review by year end and hope it will work fine for long. For now, back to 5 stars! (previous was 3). Thanks Mr Ketan for the support.I received this item at the start of November and was amazed by the quality of bass it put out. I converted my active Edifier T5 (which had conked off) to passive after Mr Ketan put that idea in my head on call. He was very polite and helpful. This thing made the T5 sound so much better. The bass was clear and hit with authority like the inbuilt T5 amp couldn't dream of doing. I even ordered his 12 inch sub to replace the T5 and the combination with this was fantastic.Mr Ketan wanted me to write a review but I got busy in December and then somehow put it as a to do thing later. Then I decided to wait after some months of use to give my review. Unfortunately this amp on its own, went up in smoke. While playing, I heard a bit of a 'thud' sound and then saw smoke coming out of the vents. It was toast. Wanted to give it 5 stars but this happened. I'm now using a spare fosi amp to power the woofer, which does the job well enough but it isn't as clean as this was.Not sure if it is worth attempting a repair, with courier costs to send it to Delhi and no guarantee if this can be repaired and sent back (whether the total cost of repair and courier services will be reasonable or almost like buying new).

First of all i tried contacting seller before purchase to get guidance on various models before purchase and owner guided me well to arrive at this model which suits my purchase. Now coming to productI am looking for a subamp for my 12 inch jbl passive sub which i used for my car and when i tested with my setup, Initially product sounded muffled as i connected my fosi audio BL20C sub preout as input to this amp.Called him and he suggested that my amp might send low input signal which i don’t understand how to make it high as my amp only has preout and cannot increase gain.Later owner suggested me to use a impedence converter to solve this problem which we use in car audio and further requesting , he sent the same product low cost to me which was really appreciative.Once i received he also assisted me on how to connect it to my amp as i connect it parallely to my existing front input.Once all this is done then comes the sound output. My woofer is power hungry as its a 4 ohm 12 inch jbl aub in a big enclosure and the amp drives it well . Able to achive low as good as 30hz and now my setup came to live.Really appreciate the extra mile seller went by answering all my queries and even connected with me in calls during setup and ensuring that i get what i want.

Its giving good bass as compared to the back panel of active subwoofers.So active subwoofers are no longer worth it.

Bought it on december 12th, by jan 14th within 32days there was a burnt smell and amplifier stopped working, when contacted the selle, i was aked to courier it from chennai to delhi which would cost me Rs.1000 and theres no guarantee if the seller would repair and send it, so the warranty given is of no use only suitable for people residing in delhi since it is easier to get it serviced, i foresee that most amplifier would require a service within a year. Better not buy dince there is no service support out of delhi

This is an excellent made in India product. When the Blu-ray player of my home theater in box died, I used the opportunity to buy an AVR to drive the HTIB 5.1 speaker system. Being a noob, I didn't know that my HTIB came with passive subwoofer. When I realised it, and seeing that decent active subwoofer costs more than 20k... I started looking for ways to convert passive sub to active. Lots of internet forum/YouTube research later, I found that I can use a plate amp in a DIY way, but quickly found out that it is difficult to pull off as easily as shown in videos.Then I came across this straight forward no-nonsense product. I checked the specs of my sub (6ohm, 200watts, 10 inch) and bought this model hswa-300 straight away. It took almost a week to reach me, but it arrived in good packaging and condition. After doing the connections between sub & amp and AVR & amp , there was no sound from sub. I got worried and my replacement windows was also fast closing.At last, just before making up my mind to return it, I contacted Mr Ketan from 4d furnishers. This was an excellent decision. I WhatsApp messages him in the morning from office and he replied within a few hours asking for picture of connections. I requested to have a discussion in the evening. He agreed immediately. Then in the evening, when I showed picture of connections, it looked fine. I asked if he could have a look thru video call. He agreed without hesitation and guided me on video call thru entire process of setting thru AVR. It was the speaker and crossover settings in the AVR that was needed to be tweaked.My passive Sony sub is now sounding much better than what it was able to pull off earlier in HTIB configuration.Long story short, this amp is excellent investment to convert passive sub to active. And before returning/replacment have a discussion with Mr Ketan, his able guidance may save you the trouble as happened in my case.

12 inch sub run distraction get 30% plus