@jzzmn88 , I did own the Berning ZH-230 and sold it after I bought the ZOTL40 because I have many quads of EL34 tubes to roll and the ZH-230 used TV sweep tubes. The ZH-230 and ZOTL40 sound similar until you put some NOS Mullards in the ZOTL40 and then it’s another level. I have heard there is magic with Berning and Merlin but I have not heard them myself. The class A UltraLinear is Better than the class AB ZH-230. The UltraLinear is Berning making a statement. The production model should be available any day now. Just give Mark Schneider a call. He is a great guy to deal with.
Lance
Lance