I have owned Threshold / Pass stuff for most of the last 40+ years. If you like your amps and preamp then I am sure you can tuck them away. If you prefer to dip your toe in instead of blowing all of the $10K, I recommend a Schiit Yggidrasil DAC (~2,500), competes with DACs at twice the price. An absolutely screaming deal. (Or Bryston BDA-3, ~3,500). Needs 200+ hours to start achieving it’s capability. personally am not a Naim fan or of integrated Streamer / DAC. Look at an Aurender A100 Streamer (~3,900). This combination should give you everything you need for really great sound (with some storage if you want to rip some CDs). Natural, detailed, not digital. I think it likely the sound of these should on par or better than you CDs... and competitive with your analog end.
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Personally, I have never been a fan of the Naim sound. You can do streaming from a PC... but you have to fiddle with the PC or laptop and they are incredibly noisy devices. Music streamers are built from the ground up to be quiet and reliable. For years I didn’t want to believe it and used every device you can shake a stick at... then an Auralic Aries G2 changed my mind... which I then traded for an Aurender... then upgraded because it was sooo good. I could completely live with steaming only now.
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Personally, I have never been a fan of the Naim sound. You can do streaming from a PC... but you have to fiddle with the PC or laptop and they are incredibly noisy devices. Music streamers are built from the ground up to be quiet and reliable. For years I didn’t want to believe it and used every device you can shake a stick at... then an Auralic Aries G2 changed my mind... which I then traded for an Aurender... then upgraded because it was sooo good. I could completely live with steaming only now.