Q ‘n A Saturday: Rob Watts

HFN: How many revisions do you generally go through with your designs until you set on one for mass production?
RW: Typically, 3 to 6 batches of prototypes, particularly for new product categories. I am a perfectionist, so the tiniest problem or measurement issue must be resolved.

HFN: How did the idea of colour-coded feedback start for Hugo and Mojo?
RW: That came from John Franks – it’s actually a very neat solution to simultaneously control and display.

HFN: Is there a special product that drove you into designing your own?
RW: I guess you mean drove me into creating my own DAC technology? This would be the PDM 1024 DAC, which used parallel chip noise shapers with different dithered data. It sounded much better, but indicated that fundamentally better performance was possible.

HFN: Do you believe in the burn-in effect of electronics?
RW: Sure – it’s a useful source of finding out problems. When it has break-in, particularly when it is measurable, then you need to identify the cause and remove it. You then end up with much better performance, and no break-in or significant warm up too.

HFN: Do you have a guilty-pleasure DAC of a competing brand?
RW: No I am afraid not.

HFN: What was the most difficult product to design for you?
RW: All of them! That’s because it’s rare for me not to learn something new, which then gets applied onto new designs – so each new design builds upon the knowledge gained from 29 years of digital design work. But I guess there are two stand-out products – the first being Dave. This was a project I spent more time on than any other design – over 2 and a half years, and a huge amount was learnt too. The second product was the M scaler on Blu 2; partly because of the time (I envisioned needing 1,000,000 taps in the 1980’s) but partly because I was not expecting the transformational changes that I achieved with the design.

HFN: Is there any other field of audio you‘d like to explore?
RW: After perfecting the pro audio ADC technology, then digital crossovers and loudspeakers I guess.

HFN: It‘s like beating a dead horse, but are there any plans for a Rob Watts coded digital audio player? People would go crazy about it…
RW: I guess Chord would get upset if I answered one way or the other!

HFN: What is your personal favourite DAP? Headphone? Earphone? Please explain why.
RW: Currently Mr Speakers Aeon. They are fantastically transparent with outstanding soundstage precision. My second fav HP is Audioquest Nighthawks, which are warmer than the Aeon, but not as transparent. I love the Noble range of IEM’s – but I simply can’t get on with IEM’s in my ear. When I listen with hreadphones it is often for 8 hours or so, so comfort is a crucial factor.

HFN: Do you have a favourite album?
RW: Thousands of favourites! But my favourite genre is classical, and favourite composers would be Hildegard Von Bingen, Vivaldi, Scarlatti, Biber, Hayden, Handel, Rimsky Korsakov, Shostakovich, Vaughn Williams, Elgar, Glass, Zimmer and Gorecki. In terms of performers Oistrakh, Richter and Jacqueline du Pré really stand out for me.

Thank you very much Rob for this insightful and great interview, it’s been very interesting. We can’t wait to see more products featuring your technology!

Q ‘n A Saturday: Rob Watts
4.8 (96.21%) 58 votes


A daytime code monkey with a passion for audio and his kids, Linus tends to look at gear with a technical approach, trying to understand why certain things sound the way they do. When there is no music around, Linus goes the extra mile and annoys the hell out of his colleagues with low level beatboxing.


    • Reply December 10, 2017


      It seems like Rob was thinking of something else in the question about burn-in. He talks about burn-in in terms of a problem to be solved, rather than what the interviewer was (presumably) asking–i.e. whether or not an earphone or player’s sound quality changes/improves over time through continued use.

      • Reply December 11, 2017


        True, I tried to get him to say wether or not he believed in Burn-in (sq changes over time), but honestly, I like his answer a lot.
        What he says is, that the break-in effect is only there because one component is not behaving like it should, and therefore is an error in the design. Take it out and you’re left with better gear.

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