terrible customer service / slow shipping I bought a sub woofer with built in amp. It took over 3 weeks to get the unit. By then I already bought a better unit from "Crushfield" and had it installed,. They take forever to send the unit. Very slow shipping and order fulfillment. I never opened the box and wanted to return the unit. They took 2 weeks to finally agree to take the unit back. I still have not received my refund. I am calling my credit card company to do a charge back.. they suck use Crushfield.

Cerwin Vegas CUPRO5k Amp Hello My name Timothy Walker from Atl ga.I order a Cerwin Vegas CUPRO5k Amp..on Feb 15.-2023.it Came today Early this morning.I wasn't expecting to come this early but I'm so happy can't wait to hook it up.Thanks Jacob and Jonathan price for my order I will be ordering more from your company..Also The tracking your package was on point.😊

I did leave a good review that was a mistake I did leave a good review and then my friend showed me his 1/0 gage wire. Mine is mostly rubber and I paid for ofc tend. his is way bigger actual ofc wire🤔 It's sickening spending the money and thinking I got good high put wire... They let me down i wish it would let me post a pic of the difference

Worst customer service. First, in 2020 I bought two amps.with extra warranties for 2 years, on 2021 they get smoked, so I asked Wolfram to send me the RMA # to send them for fix. (to: The Amp Lab, in Fairfield, Maine.) I paid the shipping, and finally they fixed. Last year I bought another one, but Last February 2022 one of those they have fixed it smoked again. 45 days ago I have been tried to contact Wolfram by e-mail, on Facebook, by phone, but the 2 phone numbers I have are disconnected, gues maybe they went out of business, if so I'm pretty sure Down4Sound and JP know Wolfram is out of business, wouldn't be better if they tell us the truth, what is going on, be honest with the customers, unexpected things happen but not "beat around the bush" Also I messaged JP on Instagram, (he never answer me back) sent a message to: Down4Sound page too, called Down4sound like 3 times, to get support from them and they just told me: they are so busy, "you need to be patient" I contacted: Colin Buckeye (used to be like a Wolfram Key principal, but he's no more working there) through a message and he gave me the name of Tim and his phone # so until the 2nd time I called him he call me back and gave me the RMA link, and still waiting for Wolfram response, I'm pretty sure I won't ever gonna receive it. Don't waste your money and your time in here, look for a well established company, like: Sonic Electronix, Online Car Stereo, Crutchfield, etc.

Purchased a skar rp2000.1D when it… Purchased a skar rp2000.1D when it arrived didn't work right out of box. Contacted D4S to return and was told they would not replace it but instead they would ship it to skar for possible warranty. So now I have no amp and the money I spent is in limbo indefinitely. Will never deal with this place again regret doing it in the first place. BUYERS BEWARE.