The Micro Clock MKIII XB is the most accurate word clock we’ve developed to date. With only 0.6pS RMS of jitter at the BNC outputs, it has less than one third of the jitter of the standard Micro Clock MKIII! It boasts incredibly accurate crystal oscillators and superior quality galvanic isolation, both of which contribute to the extraordinarily low jitter measurement. 
 
Product Features/Specifications: 
Ultra-low jitter, harmonically-enhanced word clock signal generation 
Dimmable frequency display 
8 selectable sample rates (44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, and 384kHz) 
6 BNC outputs with dedicated output drivers for maximum isolation 
RCA S/PDIF output 
Optical S/PDIF output 
AES output 
Full & 1/2 rack removable rack ears 
Locking frequency selector knob 
 
Technical Specifications:  
Link: 
https://www.blacklionaudio.com/store/word-clocking/micro-clock-mkiii-xb/#specs  
 
Jitter 
0.6pS RMS (BNC outputs) 
Outputs 
6 BNC, 1 XLR AES, 1 RCA S/PDIF, 1 Optical S/PDIF (recommended max. cable length = 1,000ft of high quality, 75Ω coaxial cable) 
BNC: 75Ω, 5V unterminated 
RCA S/PDIF: 75 Ω, unbalanced 
AES XLR: 110 Ω, balanced 
Clock Frequencies 
BNC (kHz) – 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 
RCA S/PDIF & AES (kHz) – 44.1, 48, 88.2, 96, 176.4, 192 
Optical S/PDIF (kHz) – 44.1, 48, 88.2, 96 
Power 
9VDC (6W power consumption) 
Power connector 
2.1mm barrel connector with 5.5mm outer diameter (center pin positive) 
Weight 
2.2lbs 
Dimensions 
6.5”L x 6”W x 1.75”H (without rack ears installed) 
Shipping weight 
4lbs 
Shipping dimensions 
13” x 13” x 5”