The Quartzlock A1000 Frequency Reference is a 1U rack-mounted Rubidium Atomic Clock based instrument. Exceptionally low drift is a unique parameter for the A1000. The hourly and daily stability and drift performance are "best available", typically 8x10-13/day, at the 10MHz, low distortion, sine wave, 50 Ohm output. Very high reliability stems from the physics package and Quartzlock's electronics. Long term production has led to MTBF's of well over 100,000 hours. The A1000 Frequency Reference has a high reliability inbuilt 110 - 240V ac power supply with low noise characteristics.

The A10-M is an ultra low noise rubidium frequency standard with a 10 MHz output. It is designed for frequency referencing and calibration applications, including standards laboratories and production test for oscillator manufacturers.

The E10-P is a portable rubidium frequency standard with a 10 MHz output. It carries the same rubidium reference as the E10-X in a portable enclosure with an internal battery, giving 5–8 hours of operation away from mains power.

The Quartzlock E10-Y is a benchtop rubidium frequency reference. It provides very low noise and low ADEV at any frequency between 1 MHz and 100 MHz, and can be configured with single or multiple outputs. Outputs of 1PPS, 10 MHz, 5 MHz and 1 MHz can be specified.

The A1000A is based on the E10-LNA Very Low Noise Rubidium Oscillator Module which is a sub miniature atomic clock with Quartzlock’s ‘active noise filter’ technology built in. This rubidium oscillator has 100 x less drift than OCXO’s. With short term stability of 0.002ppb/s @ 100s this rubidium oscillator provides significant improvements in performance over other rubidium components.

The E10-X is a desktop rubidium frequency standard with a 10 MHz output, for laboratory, calibration and test use where a permanently installed reference is required.