What are /r/Oud's favorite Products & Services?

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I would be more likely to recommend the 'all instruments' tuner from the same company - since the tuner you posted is optimized for standard tunings for guitar, et cetera - and not oud.

https://www.amazon.com/dp/B00646MZHK/ref=psdc_11968711_t1_B01H74YV56