Pros: Build Quality, Tunable Filters, Comfortable
Cons: Can be very bright and sibilant for those who are treble sensitive, there is a third filter in the works to resolve this.
RockJaw ALFA GENUS IEM
Review by TrollDragon
Way back in April a new Sponsor on Head-Fi called RockJaw created a post looking for members to test and review a new product line consisting of multiple IEM’s and headphones. I applied at once and was accepted by RockJaw’s representative Rockbob. This is going to be a great experience for myself as well as quite a few others, since we get to evaluate the new products and our opinions will be factored into the final retail products.
With all the formalities and details looked after, a large box of RockJaw products appeared on my doorstep, multiple IEM’s and a pair of headphones. I have spent several weeks with the ALFA GENUS IEM’s out of various sources and will now present my review.
I usually do an overview but the product we have is with beta packaging. The complete product line will have a totally revamped, nicer looking packaging in the near future.
The slide out storage case is a great way to store your IEM’s or pack them for travel. Too thick to be used as a daily carry case, i believe RockJaw are going to provide a soft pouch with future versions.
Accessories consist of nice silicone tips in S/M/L and two pairs of tuning filters in Silver (Enhanced Bass) and Black (Monitor Class). I understand that with the final product there will be a third filter tuned between the Silver and Black. These filters and IEM body are nicely threaded allowing an easy way to switch filters without fumbling to get the thread started. I can see that once you have found your desired sound signature by experimenting with the filters at the beginning, most people will stick with the one they like best and store the other two sets back in the case.
The build quality of the ALFA GENUS is exceptional and looks very solid with it’s aluminum strain reliefs and ebony wood body. I feel these will hold up to a fair bit of rough usage, the cable is a flexible shiny black PTFE material I do believe. There is a little bit of mechanical noise in the cable which can be alleviated by using the provided shirt clip or by wearing them up.
Fit & Sound
The ALFA GENUS are one of the easiest IEM’s to get a good fit on that I have used so far and the large tips provide an excellent seal.
I have run these out of a Colorfly C3 amplified with a Miu Audio MRA DIY amplifier and a FiiO X3 on low gain, switching between the two for my review. In my opinion the ALFA GENUS are very source dependent and will not have a great synergy with all devices.
I started with the silver filters installed and found the sound to have an amount of bass that was just about unlistenable to my ears. The bass is overwhelming and very boomy, it bleeds up into the lower midrange and will muffle voices quite easily. I tried the silver filters with a 3rd generation iPod nano and they seem to be a little more tolerable from that device. I do like a nice solid punchy bass that digs deep where you can feel the impact on EDM tracks, but somehow I doubt that bass heads would even like the silver filters. I never even bothered with testing the treble on the silver filters since the bass was so overwhelming.
Now the black filters are at the other end of the spectrum, some will find them a little too far at the end. The bass on the black filters is acceptable to my ears, not boomy and doesn’t bleed into the mids. Some might find it a little anemic, which is why RockJaw has created a filter in between the two provided. This new filter should fill the gap perfectly regarding bass. The treble on the black filters can be a little sharp to my ears depending on the source and the genre of music played. I found Paul Simon’s Graceland 25th Anniversary Edition very sibilant at points and actually starting to get annoying, with the FiiO X3 I was able to bring the treble setting down to -5 and take some of the edge off. This could not be done on the Colorfly C3 since it’s EQ was programmed by simians and is basically unusable.
Now Jazz at the Pawnshop was a little sharp in spots but not unlistenable by any means. Some of the users in the RockJaw test group do not find these sharp or sibilant except with overly bright tracks. It is highly possible that I just may be a little too treble sensitive.
I am personally looking forward to the new filters for the ALFA GENUS with high anticipation. If they will increase the bass presence by a small amount while taking some off of the brightness, then these IEM’s will be a serious contender in the sub $100 bracket that will please the vast majority of listeners with a sound that can be custom tailored to your liking.
I would like to thank RockJaw and Rockbob for the samples used in this review, RockJaw is a definitely a company to you should keep in your radar when considering your next IEM purchase.