ðɛɹˌɑːɹ mˈɛni dˈʌbəl dˈaɪoʊd tɹˈaɪoʊd tˈuːbz, ɪŋklˈuːdɪŋ ˌiːbˌiːsˈiː ˈeɪɾi wˈʌn sˈɪks bˌiːdˈiː sˈɛvən, ˈɛbk nˈaɪnti sˈɪks æt sˈɪks, ˌiːbˌiːsˈiː nˈaɪnti wˈʌn sˈɪks ˌeɪvˈiː sˈɪks ænd ðɪ ˈoʊldɚɹ ˌiːbˌiːsˈiː wˈʌn, ˈɛbk tˈuː, ˈɛbk ɪlˈɛvən, ˈɛbk twˈɛnti wˈʌn, ˈɛbk θˈɜːɾi θɹˈiː, ˌiːbˌiːsˈiː fˈoːɹɾi wˈʌn aɪdˈɛntɪkəl tʊ ˌiːbˌiːsˈiː ˈeɪɾi wˈʌn bˌʌt ɹˈɪmlɑːk bˈiː ˈeɪt ˈeɪ sˈɑːkɪt ɪnstˈɛd ʌv nˈoʊvəl, ˌeɪbˌiːsˈiː wˈʌn ˌiːbˌiːsˈiː wˈʌn wɪð ɐ fˈoːɹ vˈiː hˈiːɾɚ, sˌiːbˌiːsˈiː wˈʌn ˌiːbˌiːsˈiː wˈʌn wɪð ɐ tˈuːhˈʌndɹɪd ˈɛm ɐ hˈiːɾɚ.
There are many double diode triode tubes, including EBC81 (6BD7), EBC90 (6AT6), EBC91 (6AV6) and the older EBC1, EBC2, EBC11, EBC21, EBC33, EBC41 (identical to EBC81 but Rimlock (B8A) socket instead of noval), ABC1 (EBC1 with a 4 V heater), CBC1 (EBC1 with a 200 mA heater).