EST.1997 | F.K.A. Turtle Records®

The Spirit of Turtle

A Music platform for Ultra High Resolution Stereo, Surround-Sound and AURO-3D Immersive Audio recordings by HQ|NORTHSTAR. Over three decades of Musical Craftsmanship from The Netherlands.



Now available

Northstar Recording Services | The Netherlands

AURO-3D High-End Studio



Ella van Poucke Schumann Complete Works for Cello

Available now!

On location recordings with world renowned artists

Historic & Contemporary Recording Locations around the world

Future Releases

Q1 2022

Ars Antiqua Austria Fréderick Franssen Matangi Quartet


Hannes Minnaar J.S. Bach Goldberg Variations

Now available


Netherlands Radio Philharmonic Orchestra / Bernard Haitink Bruckner No. 7

Now available

What science cannot declare, art can suggest; what art suggests silently, poetry speaks aloud; but what poetry fails to explain in words, music can express.

Hazrat Inayat Khan

Absolutely unparalleled products and service. I'm confident that this store will be the next big thing in its industry, and that its products will be timeless.

Steve Jordans

An exquisite sound quality. A not to be neglected asset for all those in the Hi-Res league. Northstar Recording Services being your constant guarantor.

Adrian Quanjer and

... this is truly demonstration quality sound!

HiFi+ (UK)

The Spirit of Turtle consistently crafts the most revealing multi-channel recordings in the world today.

Neil Patel | Avalon Acoustics

So natural, so direct, so strong... Ich war völlig von den Socken!

Christoph Prégardien (vocalist)

Moving, startlingly beautiful... Lump in my throat...

Ewald Demeyere
35 years of musical Recording craftsmanship

The Spirit's heritage

A Boy's Dream to Reality

Making music, self-built amplifiers and a passion for reproduced sound with HiFi loudspeakers (Wharfedale at the time), started the quest for becoming a record-producer/engineer around 1979. In 1986 the dream came true. (On the picture the just released album of Supertramp, Breakfast in America.)

Read more

Extensive choice in High Resolution Downloads

In our catalogue you'll find state of the art Studio Quality Recordings in the highest resolutions available (DSD from 64 to 256, PCM from 44,1kHz to 352,8kHz and 5.1 Surround Sound up to Immersive 9.1 AURO-3D), all for you to enjoy at home.

Read more

Vintage and New Physicial Albums

The Spirit's music is not only captured in digital downloads. We also love good packaging, so you'll find a fair amount of CD's, SACD's, BLURAY's, DVD's and Vinyl in our catalogue.

Read more
Technical Excellence

Standard & Custom delivery formats

Choices we make for producing and delivering our recordings, to ensure the maximum transparency and create an optimal gateway between musicians and audience.

All Formats straight from the Source

The Spirit or Turtle offers only recordings exclusively recorded and/or mixed/mastered by HQ|NORTHSTAR's pioneering recording producer & -engineer Bert van der Wolf from The Netherlands. A personal portfolio of over 30 years and a professional statement using the proprietary HQMM® (High Quality Musical Mastering) principle.

Read more

Your favorite format not available? Ask for it at

It is practically impossible to permanently host all possible permutations of sample-rates and multi-channel systems, but TSoT can deliver custom versions if you like. Send a request mail and we'll see what we can do.

Read more

High Quality Musical Mastering®

These High Definition Stereo, Surround Sound & Immersive Sound Recordings are Produced, Engineered and Edited using the ‘High Quality Musical Mastering’ principle. (HQMM®)

Read more

The Spirit of Turtle

HQ|NORTHSTAR Recording Services

If Kuijken & Co are playing Mozart piano quartets and Bert van der Wolf takes credit for the recording one might as well buy it blindfolded.

Adrian Quanjer and

...there are some absolutely stunning 24/352.8 PCM recordings out there from Northstar Recordings that may just be the finest I have ever heard...

Richard Murison | Copper Magazine

A realistic sound stage and surround depth, with no disturbing noises from the audience or unwanted echoes from the walls. But with NorthStar Recording Services in charge, that does not surprise.

Adrian Quanjer and

It’s generating so much emotional impact that every hair on my arms and neck starts to arise

Werner Ero |

No wonder that it has become a wonderful album, partly thanks to the recordings made by Bert van der Wolf at two different locations. The fact that they 'coincide' perfectly with each other in this regard is partly due to Van der Wolf's craftsmanship.

Aart van der Wal | Opus Klassiek
seamless connection

Roon compatible

Roon Labs has the option to connect directly with your Dropbox.

Check our FAQ

The Spirit of Turtle

HQ|NORTHSTAR Recording Services
Dropbox logo
Smooth File Transfer

Dropbox incorporated

The Spirit of Turtle have chosen to supply our content through Dropbox. This worldwide highly accepted cloud-service delivers optimal accessibility and flexibility for all involved and also connects seamless with several Hi-Fi player applications, such as f.i. Roon Labs.

Check our FAQ
Sign up for our Newsletter
Get informed frequently about discounts, new releases, new recordings etc.