Also responding to a very good and now deleted post by @obscurerobot.
Music Tribe’s engineering is very good in cost reduction, in design and especially in manufacture. They have also cut down stream costs, like with the way they have aligned their retail distribution.
Cost reduction engineering strangely adds to the upfront expenses, but again can decrease total expenses with volume.
They also have a cost calculation model, that places a lower emphasis on profit, and more on growth which makes there prices lower.
A wider product base helps spread risk. Smaller makers have more risk if one of their two big products is a flop this year.
Also being across product lines helps with risk. If guitar products are off this year, but drum machines do well you’re covered. Commercial electronics can cover for personal buying being off.
Risk also is part of their product decisions. Predicting the sales for an RD-9 probably has less risk than a completely new but unknown by the consumer sort of product.