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

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.

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.

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

The media could not be loaded. I was impressed after buying this product, I didn't think I would get it so good amplifier, its performance is much better than I thought and I liked it very much, I found this amplifier after a lot of searching, if you think you can definitely buy this amplifier, the best thing is that I got 100% support from Ketan Sir, you can get help anytime for any kind of problem, jab me yea amplifier ko first time purchase Kiya tha tab kuch din use karna ke baad kuch problem araha tha, shyad yea mera mistake tha kuki main sab kuch acha se notice nahi Kiya tha, tab main socha tha ki agar replacement Kalia dunga toh bohot time lagega esliye mara pass ek mechanic tha usko dhikaya , wo tik nahi kar paya, uske baad main 4d Furnishers ka help line number main call Kiya or sir ko Mera jitna problem hai wo sab bataya hai , photo or video banake v diya hai, uska bad sir bola tik hai yea amplifier ko return kar do hum log or ek new amplifier aapko baj denge or ek acha baat hai ki jo Amazon ka replacement date wo v expire nahi hua tha , jab or ek new amplifier Mila toh main sach mein believe nahi tha ki itna support milega mera ko, finale I'm very happy, thank you so much sir .