Yes. The old Current and Voltage System consists of two current sensors with 6-pin DIN connectors and two voltage probes with 6-pin connectors. These sensors connect to a box labeled “Dual-Channel Amplifier”.
As long as you have the whole system, the Dual-Channel Amplifier will connect to modern interfaces using two DIN to BTA Adapter (DIN-BTA) adapters. Note that the the Dual-Channel Amplifier has two 5-pin DIN connectors, and both must be connected in order for the system to work.
The sensors cannot be used without the Dual-Channel Amplifier. The six pins on the sensors include a center pin that makes it impossible to connect them directly to a LabPro, LabQuest, LabQuest 2, LabQuest Stream, or LabQuest Mini. There is no adapter to use the sensors without the amplifier.