Why big amps are often a waste of money. Questyle M15i, M12i, M15C & Q-Link review

Questyle dongles review - Q-Link, M15C, M12i, M15i, M18i Global* - https://amzn.to/478uU1J *affiliate links help support the channel - thank you! Need help? Message me on Minnect: https://bit.ly/HiFiHelp Join my Patreon community: https://www.patreon.com/passionforsound Become a Passion for Sound YouTube member: https://bit.ly/PFSMember Get MERCH! https://bit.ly/PFSMerch I find few things more frustrating in the audiophile hobby than the constant spread of misinformation regarding headphone power. In this video, I’m using physics and real-world measurements to debunk the "headphone power fallacy" once and for all. Many believe that planar magnetic headphones like the HiFiMan Susvara or Moondrop Para II require massive speaker amps to sound their best, but the data tells a different story. I put the entire Questyle dongle lineup to the test—including the M12i, M15i, M15C, and the flagship M18i—to see if these portable DAC/amps can actually drive demanding full-sized headphones. We’ll explore sub-myths about bass frequencies, current requirements, and why high-gain modes aren't always what they seem. Whether you're using a budget Questyle Q-Link or a high-end desktop setup, understanding the relationship between sensitivity, impedance, and safe listening levels will change how you shop for gear. Join me as I bridge the gap between objective science and subjective listening. BEST AUDIO BARGAINS BELOW! World's Best Cable Pro interconnects Review - https://bit.ly/44b8KtW Global* - https://amzn.to/3UOFtAN Tipsy M1 IEM Review - https://bit.ly/48del5v https://tipsyaudio.com/ Apos Gremlin headphone amp Review - https://bit.ly/43FZjna Global* - https://bit.ly/GremlinAmp SMSL M20 DAC & headamp Review - https://bit.ly/4oManqu Global* - https://amzn.to/3YRxG79 Schiit Mimir DAC Review - https://bit.ly/4r3cuaI Global - https://bit.ly/484APo8 FiiO FT1 headphones Review - https://bit.ly/4lfVCLd Global* - https://amzn.to/4iC4VTG FiiO M21 digital audio player Review - https://bit.ly/3K3PzeU US & CA* - https://bit.ly/FiiOM21DAP Global*: https://amzn.to/3HS7wfe xDuoo TA-66 tube amp Review - https://bit.ly/448jRoo US & CA* - https://bit.ly/xDuooTA-66 Global* - https://amzn.to/3VWWSYS SMSL AS400 speaker amp & DAC Review - https://bit.ly/480NiZQ Global* - https://amzn.to/3JkFxWi Topping DX5 II DAC & headamp Review - https://bit.ly/47PmfR2 US & CA* - https://bit.ly/4mjCLy8 Global* - https://amzn.to/4ncA8zm ADAM D3V active speakers Review - https://bit.ly/4rhHeoO Global* - https://amzn.to/4hw2Doo SMSL RAW-DAC1 DAC Review - https://bit.ly/43EXDKC US & CA* - https://bit.ly/RAWDAC1 Global* - https://amzn.to/4hgqgkJ Aune S17 Pro EVO headamp Review - https://bit.ly/4o2nrXF Global* - https://amzn.to/4jU7AZx SMSL PL200T CD transport Review - https://bit.ly/4o9LDaE US & CA* - https://bit.ly/SMSLPL200T Global* - https://amzn.to/3IKlkIQ Nitsch Pietus Maximus headamp Review - https://bit.ly/49nY3Yy Global - https://bit.ly/3JQqkwC Shanling EC Zero T portable CD player Global* - https://amzn.to/47U9RR1 Chord Mojo 2 DAC & headphone amp Review - https://bit.ly/43F0Rhg Global* - https://amzn.to/3E5GNKj FiiO K17 DAC, headamp, streamer & preamp Review - https://bit.ly/42hKvIX US & CA* - https://bit.ly/FiiOK17 Global* - https://amzn.to/3QWziIH SJY Horizon Closed Carbon headphones Review - https://bit.ly/3DTKMd5 Global* - https://bit.ly/SJYHCCA ZMF Bokeh headphones Review - https://bit.ly/4hXLhAN Global - https://bit.ly/42vMLwo EverSolo T8 streamer Review - https://bit.ly/4pdmo7V Global* - https://amzn.to/4gjdSkx Topping D900 DAC Review - https://bit.ly/4oJNoMP US & CA* - https://bit.ly/TopD900 (Apos) Global* - https://amzn.to/44D157g ADAM A7V active speakers Review - https://bit.ly/4i2hO8L Global* - https://amzn.to/43mIbma LTA Velo headamp/preamp Review - https://bit.ly/42Eeknp Global - https://bit.ly/LTAVelo Gustard X30 DAC Review - https://bit.ly/4p93yij Global* - https://bit.ly/GUSTARDX30 Amzn* - https://amzn.to/3LenKRj 00:00 The headphone power fallacy 02:29 Questyle dongles review 04:39 When you don't have enough power... 06:56 Sub myth #1 08:43 Questyle Q-Link review 10:59 Questyle M5C review 13:05 Sub-myth #2 17:35 Questyle M12i review 20:07 Sub-myth #3 20:33 Questyle M15i review 23:45 Questyle M18i review 25:17 Busting the planar myth 26:32 Final thoughts #audiophile #headphones #hifi #questyle #dac #headphoneamp #planarmagnetic #hifiman #moondrop #audioengineering #soundquality #passionforsound