An indispensable tool for the laboratory, made with care and features uncommon in models from other brands. Tested to the limits of its performance, as per the reference technical data sheet, it was able to respond effectively even for fairly long periods of time. The only flaw, albeit a minor one, is the cooling fan which does not seem to be thermostated and, therefore, is forced to operate at constant speed. In my opinion, the price-quality compromise is good also because the circuit has been equipped with an excellent power transformer which guarantees professional level performance. Excellent delivery times and the online service provided by Amazon.