An early attempt at combining several components in one device (like modern ICs) was the Loewe 3NF vacuum tube first made in 1926.[4][5] Unlike ICs, it was designed with the purpose of tax avoidance, as in Germany, radio receivers had a tax that was levied depending on how many tube holders a radio receiver had. It allowed radio receivers to have a single tube holder. One million were manufactured, and were "a first step in integration of radioelectronic devices".[6] The device contained an amplifier, composed of three triodes, two capacitors and four resistors in a six-pin device.[7]