HiFi on the Go - Dream or Reality?

I get along famously with My Sennheiser M4 over the ear Bluetooth phones. I use a Now discontinued LG V40 phone as a source. Given that my 76 yo damaged ears suffer from tinnitus and loss of anything above 6 to 8khz, This combo is great for my needs. Noise cancellation has really improved significantly over the years and as ghdprentice points out, ambient noise ruins any attempt at hi fidelity in a travel environment.

I usually utilize the Bluetooth AptX for listening when I walk. If I want highest possible fidelity, I purchased aTempotec Sonata HD Pro DAC/Amp that's capable of 24/192 resolution with wired phones. With above said ears, I don't really detect much difference. The Sennheiser smartphone app also allows for sonic tweaking so there is also that. 

Thanks @ghdprentice and impressive systems. I had SF Strads and sold them a few years back. I miss them and was wondering if you had a chance to audition the Strads G2 or Amati G5. Perhaps a topic for a different forum. 

You make a valid point about airports and planes being far from ideal environments for an audiophile experience. I wish I had chosen my words more carefully as I did not mean to use "on the go" quite this literally. My trips, as yours since you mentioned Japan, involve multiple hotel stays where I would rate the environment as good enough. 

That being said, I've gotten my Bose NC 700 HP out of the closet and I'll give them another "go" 

OP,

👍

I have been listening to Lilium. If I were to upgrade… well, I go up. I have not heard the new Strads yet. But heard good things about them.

On hotels. Yes, you have to make a choice based on time of travel vs hotel time. Most of my travel was far away. I have spent years in hotels… but over the last couple decades there were lots of dinners out, or work. So, the convenience / fun sound of the Quiet Comfort were so worth it for me. Also, I can connect to my iPad and watch a movie, and wonder around the room.

I use my A&K / Focal for vacations where I stay in one place (like vacation for two of three weeks). Interestingly I have decided that the A&K / Focal is so sterile a sound that I am going to look into a portable tube amp… in comparison to my main and headphone systems it sounds terrible… yeah, detailed with good bass, but without natural / musical warmth. 

Bowers & Wilkens PX8 Wireless (with wired option) Noise Cancelling Headphones! Great sounding with Bluetooth 5.2, and built like a tank, the quality is obvious from the moment you pick them up, very comfortable to wear, too.

I looked into the Focal Bathy’s noise cancelling headphones with a DAC chip. They retail for $700.00 which isn’t unreasonable but I found out that the drivers cost Focal around $20.00. That’s also when I was told about how high the mark up is on headphones. Seeing if my source is right, I’m too obstinate to purchase the Bathy’s regardless of the overall sonic benefits. Right now I have Cardas earbuds and the Cayin RU7 DAC to iPhone for my gym workouts and I have to accept the fact that measuring my portable audio with my reference audio is simply an incomparable comparison.