The QL355TP is part of the “QL Series II” from AIM‑TTi (formerly Thurlby Thandar Instruments). It’s a triple-output, linear regulated laboratory power supply designed for high precision, low noise and advanced control/remote interface capability Output Ranges (Main): 0 – 35 V, 0 – 3 A/ 0 – 15 V, 0 – 5 A Auxiliary Output: 1.00 V to 6.00 V at up to 3 A Max total power: approximately 228 W Setting resolution: Voltage 1 mV; Current 0.1 mA (depending on range) Load regulation (using remote sense): Voltage <0.01% + 2 mV; Current <0.01% + 250 µA (for main output) Ripple & Noise: typically less than 0.35 mV rms in CV mode (main output) Common-mode noise current: <4 µA rms at 20 MHz bandwidth Input voltage: 115 V or 230 V AC (±10%) Size & weight: Approx 280 × 160 × 290 mm, ~10.5 kg