The first thing that strikes you when you open the boxes of the EB01-E and EB03, is that Silverstone put a good deal of effort into the styling and build quality of these units. They are vaguely piano shaped, which means they look great as a stacked pair but might be difficult to pair with something else if used singly. The brushed Aluminium finish is a bit of a fingerprint magnet, leaving white oxidation marks behind which are visible in the pics. A quick wipe removes them though so no major problem. The only thing that really stands out on the units is the large volume control on the top of the amplifier, which is noise free and very smooth in use. All you will find on the front is the full sized 6.3mm headphone socket and indicator LEDs for power (on both) and play on the DAC which only illuminates when it is receiving a signal. The EB03 amplifier is some 50% taller than the EB01-E DAC, which means they look better stacked than side by side. The rear of the units is where everything happens and Silverstone have done a good job of laying everything out in a logical and tidy manner. The EB01-E DAC has RCA sockets for output to an amplifier or powered speakers and inputs for asynchronous USB, Optical and Co-axial SPDIF, all of which are clearly labelled and with LEDs to indicate the active input. There is also a small push switch to scroll through the three input options, so it would be possible to have more than one source connected at a time. The EB03 headphone amplifier has RCA sockets for both input and line level output. The line out acts as a pass through so is unaffected by the volume control, so if you also have speakers connected, you will have to turn them off when hot in use. Finally there is a socket for the external wall wart power supply and a satisfyingly solid on/off switch. The EB01-E comes with a short USB cable and an RCA to 3.5mm (socket) Y-adapter cable, which proved useful for listening to the DAC on it's own. The EB03 comes with an RCA to RCA interconnect cable, an RCA to 3.5mm (male) Y-adapter cable, a 3.5mm to 6.3mm adapter and the power supply. The last thing to mention is that these are quite chunky and absolutely dwarf my Schiit Modi and Vali stack.... So how do they sound? The short answer is very nice indeed and I really didn't want to send them back. For the review I used Sennheiser HD 650 and modded AKG K702 headphones with a Schiit Modi (DAC) and Vali (hybrid tube amp) plus an Asus Xonar Essence STX for comparison. I also used a pair of Sony MDRXB30EX IEMs for listening to the DAC un-amped. Set up was very straight forward and was just a matter of plugging in the supplied cables and installing the XMOS driver which I downloaded from the Silverstone website. My source was PC running MusicBee and a mixture of lossless FLAC files ranging from 16bit/44.1k to 24bit/192kHz. The first thing I tried was to use the RCA to 3.5mm adapter to listen to the DACs in isolation, which proved to be quite a surprise. The Schiit Modi sounded absolutely dreadful through the Sony IEMs, just a harsh and tinny mess. The EB01-E on the other hand was full sounding, with plenty of bass and very smooth with no hint of harshness at all. The only explanation I can think of is that the Silverstone DAC must supply a bit more current than the Modi, enough to bring the IEMs to life at least. The upside of this is that the Silverstone EB01-E is quite usable on it's own for driving IEMs and quite possibly low impedance, easy to drive headphones. Connecting up the respective amplifiers made any differences much, much smaller and more difficult to pick out. With the modded AKG K702s the Silverstones had quite a full sound with a nice growl to the bass and a satisfying thump to the kick drum without ever going overboard. Separation was excellent within the K702's huge sound stage making listening to Prog Rock, specifically high resolution Yes albums, a real pleasure. The sound through the HD650s was smooth and silky with plenty of detail and toe tappingly musical. In fact I found that the the sound through the EB03 sounds just like the DAC, only louder and I mean MUCH LOUDER. I never made it past the 50% mark on the volume control because at that point it was hurting my ears but it has to be said that even at such high volumes, it was still clear as a bell with no discernible distortion. That you reach such high volumes with high impedance or low efficiency headphones at so low a volume setting will likely prove troublesome if you want to use IEMs and could even be a problem with some low impedance, efficient headphones because there are no gain switches. So with something like the Philips Fidelio X1 or X2, you might well be stuck with using quite a small amount of the volume control's travel and this can in turn lead to problems with channel imbalance. You can always get around this by adjusting the volume within Windows or inside the music player and as long as you are set to 24 bit you won't lose any quality. Compared with the Silverstone DAC & headphone amplifier, the Schiit Vali does slightly colour the sound by extending the bass a little although the highs are still very clean. Swapping the amps over did very slightly increase the bass from the EB03-E but the difference was quite subtle, nothing earth shattering. If I had to pick between these two stacks, I think I would probably pick the Silverstone pair but only by a whisker and herein lies the problem. The Silverstone stack costs almost twice as much as the Schiit duo or the Epiphany O2Di. It has to be said that the Silverstone pair do have more inputs and a much more stylish case but is that difference worth £160? So, to sum up. The Silverstone EB01-E and EB03 are a stylish, well featured DAC and headphone amplifier that are easily capable of driving mid-fi headphones such as the 300ohm Sennheiser HD 650 and beyond. I thoroughly enjoyed using them and was quite sad to see them go. To my ears they are certainly on a par with the widely respected Schiit Modi and Vali stack and a step up from the Asus Xonar Essence STX sound card, so if sound quality is what you are looking for, these are definitely worth a look but as to whether they are good value for money, only you can decide.