# An Interview with Nash Reilly

- Show: [The Amp Hour](https://hardwarepodcasts.com/podcast/the-amp-hour)
- Published: 2020-01-13
- Length: 1h 33m
- Episode: 474
- Page: https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly
- Listen: https://theamphour.com/474-an-interview-with-nash-reilly/

## Summary

Nash Reilly, an electrical engineer at Sonos, discusses his work on products including the Port, the Amp, and the Move, detailing the technical challenges of audio design and emissions testing. He explains how high-speed digital signals, particularly I2S master clocks, create radiated emissions that require careful filtering and impedance management to pass compliance. Reilly also describes the complexities of discrete Class D amplifier design, focusing on minimizing startup pops and clicks to protect downstream equipment and ensure audio quality. Finally, he reflects on the company's evolution from a small startup to a large enterprise, highlighting the shift in vendor relationships and the importance of robust project management and team collaboration.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly#t=0) Introduction: Nash Reilly and Sonos Background
- [1:36](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly#t=96) Career Path: From Micron Data Analysis to Sonos Engineering
- [14:16](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly#t=856) Sustaining Engineering and Manufacturing Line Troubleshooting in China
- [25:46](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly#t=1546) Emissions Testing: I2S Clocks, Radiated Noise, and Filtering Strategies
- [32:56](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly#t=1976) Audio Quality: Sigma-Delta ADCs, THD, and Latency
- [47:02](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly#t=2822) Product Design: Click/Pop Mitigation and Class D Amplifier Challenges
- [1:03:24](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly#t=3804) Product Deep Dive: Sonos Port, Amp, and Move Features
- [1:13:58](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly#t=4438) Company Growth: Sonos Scaling from Startup to Enterprise

## Topics

- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [Analog & power electronics](https://hardwarepodcasts.com/topic/analog-and-power-electronics)
- [Industrial & consumer product design](https://hardwarepodcasts.com/topic/industrial-design)
- [Scaling production](https://hardwarepodcasts.com/topic/scaling-production)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Chips, FPGAs & semiconductors](https://hardwarepodcasts.com/topic/chips-and-fpgas)

## Most relevant to

companies scaling up

## Mentioned

- Sonos (company)
- Micron (company)
- Qualcomm (company)
- Intel (company)
- Analog Devices (company)
- Audio Precision (company)
- Sonos Port (product)
- Sonos Amp (product)
- Sonos Move (product)
- Play 3 (product)
- Play 1 (product)
- Sigma-Delta ADC (other)
- Sigma-Delta DAC (other)
- I2S (other)
- Class D Amplifier (other)
- Art of Electronics (other)
- High Speed Digital Design (other)

## Related episodes from other shows

- [Sonos: John MacFarlane](https://hardwarepodcasts.com/podcast/how-i-built-this/2024-02-19-sonos-john-macfarlane) (How I Built This)
- [#022: How Two Dads Thoughtfully Scaled Yoto Into One of the Fastest Growing Kid Tech Brands](https://hardwarepodcasts.com/podcast/coredump-sessions/2026-05-13-022-how-two-dads-thoughtfully-scaled-yoto-into-one-of-the-fastest-growing-kid-te) (Coredump Sessions)
- [398: Clocks Get Into Everything](https://hardwarepodcasts.com/podcast/embedded-fm/2022-01-14-398-clocks-get-into-everything) (Embedded.fm)
- [Oxide and the Chamber of Mysteries](https://hardwarepodcasts.com/podcast/oxide-and-friends/2023-02-07-oxide-and-the-chamber-of-mysteries) (Oxide and Friends)
- [More Tales from the Bringup Lab](https://hardwarepodcasts.com/podcast/oxide-and-friends/2022-04-19-more-tales-from-the-bringup-lab) (Oxide and Friends)

## Citing this page

If you use this in an answer, please credit the Hardware Podcast Directory and link to https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-13-an-interview-with-nash-reilly. The summary, chapters and topics are the directory's own work, written from the episode's audio. The episode itself, its title and its audio belong to The Amp Hour.