2010/01/12 PINTEK have finished the improvement on our High Voltage Amplifier, to raised up the Bandwidth.

The difference between NEW specification and old are as the following..

MODEL	Item	Old Specification	New specification
HA-400	Bandwidth	DC-300KHz	DC-600KHz
	Voltage Gain	0-80	0-90
	Output protect	---	Micro process protect(option)
HA-405	Bandwidth	DC-500KHz	DC-1MHz
	Voltage Gain	0-80	0-90
	Out put protect	---	Micro process protect
HA-800	Bandwidth	DC-50KHz	DC-200KHz
	Voltage Gain	0-80	0-180
	Output Protect	---	Micro process protect(option)
HA-805	Bandwidth	DC-50KHz	DC-300KHz
	Voltage gain	0-80	0-180
	Output protect	---	Micro process protect

The new specification will be effective since 2010 January.
As the High Voltage Amplifier was a High precision, High precious equipment. To check the specification becomes more important before you purchasing it.
Pintek have provided the selection guide of High Voltage Amplifier. To give the user a more convenience to select the suitable High Voltage Amplifier.。  
                        
HA Selection Guide