The DSP is definitely worth it, thats my opinion. I'll point out the reasons: 1. Sound staging: The beauty is that you can make the speakers sound as if all the speakers and the sub are surrounding you. It all depends how you want the music to be not what it decides. 2. It takes care of the flattening the signal from the OEM HU and then sends to the amp. 3. Its a one time investment. You can keep changing cars and ICE equipment and still retain the DSP. Why the Alpine? There are others available which are bloody expensive viz. Audison Bit One, JBL MS-8 and RF 3.Sixty.2 and the recent 3.Sixty.3. All of them are above Rs. 30k and have so many settings that it just baffled me. I'm not a sound engineer that I can play around with it . Nothing much as of now gurjinder, but we will sure update it. Coming to your point of budget. If you plan to spend 10~12k for the amp sub combo, I would suggest, donot go in for the DSP. DSP will make sense only if you go for the medium or high end equipment. If you have plan to upgrading later, by all means buy one. If you are really interested in listening to good music, do this according to me. 1. Change the OEM speakers and an amp for them. 2. Buy and DSP and tune it. 3. Buy an amp and a sub and retune it. Trust me, its intoxicating the way it stages the sound. I never believed that it could be so wonderful. Coming to the warranty aspect. Firstly, the company can void warranty on anything for any reason. The can even void warranty if you connect an amp. By all means and you just cannot do anything about it. What Jayadev did also will void warranty, isn't it?