Lindemann Musicbook Source Excellent Streamer/DAC +++

—Streamer, DAC, Preamp, Phono Stage, Headphone Amp 
—Top-line dual AKM DAC 
—Designed and built in Germany

Lindemann is a 30+ year leader in digital audio. This model has an easy-to-listen presentation utilizing the top AKM "velvet  sound" DAC chips. In my system it was a welcome step up into high-end, high quality digital.

All of its functions sound excellent. I've used it as my main system's streamer/DAC but it would also make for a cool all-in-one stereo when matched with powered speakers or headphones. And a turntable : ))

Here is the full description from Lindemann:

The musicbook Source is a universal signal source which allows a music reproduction on the very highest level of sound quality.

It features a high-grade network player which can play back music from streaming providers, music servers (NAS) and other storage media in studio master quality. It is connected to a network through a LAN cable or via WLAN. This network player offers a large range of audiophile streaming services and multiple functions such as the possibility of CD playback on an external DVD-ROM drive.

The digital-analog converter in the musicbook has been designed around the best sounding converter element that is currently available on the market, the AK 4493 from Japanese digital specialist AKM. This component stands out metrologically by extremely low distortion figures and musically by natural timbres and a perfect timing. The converter modules work in mono mode, each channel has its own D/A converter.

Prior to their conversion into analog signals, all digital signals are submitted to an elaborate re-sampling process. By using an MEMS Femto-Clock only such data will reach the converter modules which are totally jitter-free: the basic prerequisite for perfect sound with digitally stored music. The sound quality can be further enhanced by the option of converting all data into a 1-bit signal (DSD). Musically speaking, this operating mode is the cherry on the cake and opens up a completely new dimension.

The musicbook’s analog preamp has a completely analog volume control that uses the currently best regulatory network on the market, the MUSES 72320. Soundwise this component is unimpeachable and offers ultimate precision. The optionally available MM phono stage offers an exceptionally musical reproduction and has been taken straight from our highly esteemed Limetree Phono. Likewise, the headphone amplifier of the musicbook offers top-notch sound quality and has sufficient output power even for delicate headphones such as the HiFi-Man magnetostats.

The power supply of the musicbook sets a new standard regarding the absence of interference and noise. All functional areas feature proprietary, ultra low-noise voltage regulators with less than 10 μV of noise. Any mutual interaction between the individual elements of the musicbook is thus excluded. With <1 μV of noise the reference volt- ages of the digital-analog converter set new benchmarks in this field.

The Lindemann App

Our custom-tailored controller app is good-looking, fast and clearly structured and offers maximum convenience for browsing and searching in streaming services.

The album-oriented programming allows to play back a complete album with just one push of a button! Save your favorites in playlists with the streaming providers or create a local playlist. Our app is available at the appstore for iOS and at Google Play for Android.

The new tablet version featuring a landscape mode looks particularly beautiful. And it’s free to download, of course.

Specs

Network player

Ethernet: 100 Mbit/s
WLAN: Dual-band 802.11a/b/g/n/ac, WPS support
Bluetooth: 4.2, A2DP
USB: High-speed host interface for harddisks, USB sticks,
DVD ROM drives, max. output current 1.5 A
Supported codecs: WAV, FLAC, AIFF, ALAC, MP3, AAC,
Ogg Vorbis, WMA, DSD
UPnP and DLNA support
PCM resolution: 44.1 kHz up to 384 kHz, 24bit (WLAN up to 192 kHz)DSD resolution: DSD 64 up to DSD 256 (WLAN up to DSD 128)Gapless playback
Streaming services: TIDAL, Qobuz, Deezer, HighResAudio, SpotifyInternet radio and podcast
Roon Ready

D/A converter

Resolution: 768 kHz/32 bit and DSD 512
Dynamic range: >125 dB
THD & Noise: <0.001 % (@ 0 dB FS)
Master-Clock: Ultra low jitter MEMS Femto ClockRe-Sampling: with 180 dB dynamics and 32 bit resolution, bit-perfect or DSD

Re-sampling jitter damping: >60 dB
Converter architecture: two AK4493 DACs in dual differential mono mode, AK4137 re-sampler
Output voltage: 2.5 V @ 0 dBFS RCA, 5 V @ 0 dBFS XLR

Analog preamp

Inputs: three analog line inputs with 20 kOhms of input impe- dance. Max. input voltage 3.5 V unbalanced. Optional MM input for connecting a turntable (replaces input 1). Connection values MM: 47 kOhms / 150 pF.

Outputs: one balanced and one unbalanced output. The outputs may be used independently. Output impedance: RCA: 100 ohms, XLR: 20 ohms. Max. output voltage: 2.5 V unbalanced, 5 V balanced

TECHNICAL SPECIFICATIONS

Volume level control range: 0 to 99 with the following charakteristic: 0 to 20 in 2 dB steps, 21 to 60 in 1 dB steps, 61 to 99 in 0.5 dB steps.
Balance control: + / - 6 dB in 1 dB steps
Frequency response: 2 – 200 kHz (-3 dB)
Gain: 0 dB / 6 dB / 12 dB switchable
THD & Noise: < 0.001 % @ 2.5 V output

Headphone

Headphone connector: 6.35 mm (1/4“) jack socketHeadphone gain: 0 dB / 12 dB switchableRecommended headphone impedance: 16 - 200 ohmsDamping factor of headphone output: >100

Measurement conditions: 22 °C, 230 V mains voltage,
Audio Precision AP2722
Mains connection: 90 – 240 V, 50 – 60 Hz
Power consumption: 0.2 W stand-by, 8 W operation, 18 W max.Dimensions (W x H x D): 280 x 220 x 63 mm (11 x 8.7 x 2.5 in.)Weight: 2.6 kg (5.73 lbs.

Here are two of many online reviews: 
https://6moons.com/audioreview_articles/lindemann/  
https://twitteringmachines.com/lindemann-musicbook-source-the-book-of-books/ 

I've rated it an 8 for a few small nicks but it looks great overall. Will come with remote, original box, accessories and a copy of the manual.

Thanks for your interest!