What a Master Clock Actually Does
The EverSolo C10 is a master clock, and the first thing to be clear about is what that is not. It is not a DAC, it is not a streamer, and it has no audio inputs or outputs of any kind. Your music never passes through it. What it does is generate one very stable timing reference and distribute that reference to the digital components in your system.
Every digital audio component keeps time with an internal oscillator. When you have two or more digital boxes in a chain, each one is timing itself with its own oscillator, and no two oscillators drift in exactly the same way. A master clock replaces that arrangement with a single shared reference of a higher grade than any of the internal ones, so the components stop disagreeing about when "now" is.
The Oscillator Inside
The C10 is built around EverSolo’s second generation clock design, a custom ultra low noise OCXO. The two parts of that acronym both matter. The oven controlled part means the crystal sits in a temperature regulated enclosure held at a constant working point, because a crystal changes frequency as its temperature moves. The crystal itself is an SC cut, a doubly rotated cut that is substantially less sensitive to both temperature change and internal mechanical stress than the AT cut used in ordinary oscillators.
The published figures are what you are paying for. Phase noise runs minus 115 dBc/Hz at a 1 Hz offset, minus 129 at 10 Hz, minus 139 at 100 Hz and minus 145 at 1 kHz, with the noise floor at or below minus 170 dBc/Hz. Factory frequency offset is inside plus or minus 0.01 ppm, aging is under 0.002 ppm per day, and stability holds under 0.003 ppm across a range from minus 20 C to plus 60 C. It warms up to rated performance within five minutes.
Outputs, and Why There Are Four
The C10 has four BNC outputs, and they are independently buffered. That word matters more than the count. Buffering means each output is driven separately, so whatever one connected component does electrically cannot reflect back and disturb the others. A clock distributed from a simple splitter does not behave that way.
It is also not limited to 10 MHz. The C10 will output 10, 25 and 100 MHz, the 44.1 kHz sample rate family at 11.2896, 22.5792 and 45.1584 MHz, and the 48 kHz family at 12.288, 24.576 and 49.152 MHz. That range means it can clock plenty of equipment beyond the EverSolo components it was designed around. Output is a square wave at 1.8 Vrms into 50 ohms. There is also a 1PPS input on SMB for an external time reference, and every unit is factory calibrated for it.
Where the C10 Fits: the T10 and DAC Z10 Reference Stack
This is the system the C10 was designed for, and it is where the case for it is strongest. The EverSolo T10 is a streaming transport with no DAC at all, and the EverSolo DAC Z10 is the converter, preamplifier and headphone amplifier that receives from it. Splitting the source into two boxes is a deliberate choice that buys you independent control of streaming and conversion.
It also creates precisely the condition a master clock addresses. The transport is timing itself, the converter is timing itself, and the digital handoff between them happens across that boundary. Clock both from the C10 and the two halves of your source run on one shared reference. Two of the four outputs get used, which leaves two spare for a network switch or whatever the system grows into.
Where the C10 Fits: the DMP-A8 Gen 2 and AMP-F8 System
This system is built the other way round, and we would rather tell you that up front than sell you a clock you do not need. The EverSolo DMP-A8 Gen 2 is a streamer, DAC and preamplifier in a single chassis, and the EverSolo AMP-F8 is a power amplifier, which is a purely analog device with nothing in it to clock. The entire digital chain lives inside one box, where it already shares one internal clock domain.
So the C10 has less work to do here than it does in a split stack. The honest answer is that it becomes worthwhile in this system under two conditions. The first is when you add a separate converter such as the EverSolo DAC-R8 alongside the A8, which recreates the two box digital chain the clock is good at tidying up. The second is when you already know you are heading toward separates and would rather buy the clock once.
If neither applies, there are better places to spend the money in that system first, and we will say so on the phone.
How the C10 Compares to Other Clocks We Carry
EverSolo C10 vs Silent Angel Genesis GC
The Silent Angel Genesis GC lands at close to the same price and comes at the problem from the Silent Angel direction, built to anchor a system of Silent Angel streamers and switches. The C10 answers with breadth: four independently buffered outputs, ten selectable output frequencies spanning both sample rate families, the 1PPS input, and a large touchscreen that reports what the oscillator is actually doing while it does it. If you are clocking several components, or clocking something that wants a frequency other than 10 MHz, the C10 has more headroom.
EverSolo C10 vs Silent Angel Genesis GX
The Silent Angel Genesis GX is the genuine step up and is priced well above the C10. It is the right choice when the clock is the centrepiece rather than a supporting component, and when lowest possible phase noise outranks flexibility and integration. Inside an EverSolo system the C10 is the more sensible buy, because it was designed for those components and matches the chassis width.
EverSolo C10 vs the clocks already in your gear
This is the comparison worth taking seriously. The T10, DAC Z10 and DAC-R8 all run temperature controlled oscillators already. The C10 is not repairing a deficiency. It is consolidating several good separate references into one better shared reference, which is a refinement near the top of a system rather than a foundation at the bottom of one.
Who Should Buy One, and Who Should Wait
A master clock is the last thing you add to a digital front end, not the first. It will not rescue a system held back by room acoustics, by a weak amplifier, or by speakers that are not resolving enough to show the difference. Spend there first.
- Buy one if you run a split source, such as a T10 or T8 transport into a separate converter, and the rest of the system is already sorted
- Buy one if you have several digital components with clock inputs and want them all on a shared reference
- Buy one if you are building toward separates and would rather own the clock before you need it
- Wait if your digital chain lives inside a single box, such as a DMP-A8 Gen 2 or a DMP-A10, and you have no separate converter alongside it
- Wait if there is a more fundamental limit in the system, because a clock will not move past it
Frequently Asked Questions
Does the music pass through the C10?
No. It has no audio connections at all. It only supplies timing.
How many components can it clock?
Four, on four independently buffered BNC outputs.
Does it work with components from other brands?
Yes, if they have a 10 MHz or 25 MHz external clock input. The additional output frequencies widen that compatibility further.
How long does it take to warm up?
It reaches rated performance within five minutes at normal room temperature, and the screen reports warm up progress and oscillator temperature as it goes.
Will I definitely hear a difference?
It depends on the system and on how good the internal clocks already are. In a split source of real quality the effect is usually described as better focus and a quieter background rather than a change in tonal balance. In a single box system it is much harder to justify.
Is there a screen?
Yes, an 8.8 inch IPS touchscreen showing warm up, oscillator temperature, operating status and 1PPS calibration.
Come Have a Listen
A master clock is exactly the sort of component that is worth hearing in a system before you commit, because the size of the improvement depends so much on what it is clocking. Come to the showroom in Timonium and we will set it up against the system you are actually running, or call and we will talk through whether your system is at the point where it will pay you back.