Lindemann MusicBook DSD25 Network Audio Player and MusicBook 55 Power Amp

Selling our store demos of the Lindemann Musicbook DSD 25 (upgraded) Network Audio Music Player and MusicBook 55 power amplifier. We are selling these together as a set. Asking $5,900 for the both.. MSRP is $9,800 for both.
MusicBook: 25 DSD The musicbook:25 DSD is equivalent to the musicbook:10 DSD, but has also an integrated streamer which can be comfortably operated via the musicbook: app and offers a lot of great features such as the onboard TIDAL and Qobuz streaming catalogs or native DSD playback. As a side note, it is also a USB digital-to-analog converter with a superb sound quality, which enables the music reproduction from the computer in studio mastering quality. Resolutions of up to 384 kHz PCM and DSD 256 are easily handled. Moreover, the musicbook:25 DSD contains an integrated CD player which convinces by its exceptional sound quality.

But the musicbook:25 DSD can do a lot more. The integrated analog preamp, which also doubles as an excellent headphone amp, allows the connection of a phono preamp and thus offers a consummate audiophile quality also with vinyl records.

In terms of technology the musicbook:25 DSD is definitely way ahead of the competition. Using a sophisticated recalculation all digital audio signals are converted into DSD 128/256, a data format which is highly esteemed by audiophiles worldwide. Thus the actual digital-analog conversion is reduced to a mere filtering of the DSD signal. This completely new approach is the secret behind the musicbook's exceptionally good sound.

TECHNICAL SPECIFICATIONS

General
Mains voltage: 100 – 240 V, 50 - 60 Hz
Dimensions: 280 x 220 x 65 mm (W x D x H)
Weight: 3.50 kg
Power consumption: 0.5 W standby, 4 W network standby, 30 W max.

CD player
In drive (TEAC) with premium mechanism
Superb reading properties and CD text support
Excellent jitter performance

Network player
Ethernet: 10/100 Mbit/s
WLAN: 802.11b, g, n. 2.4 GHz band. WEP, WPA, WPA2 security support. External screw-in antenna
DHCP and static IP support
USB 2.0 host interface: fullspeed and highspeed mode. Charging of smartphones and tablets up to 2.1 A. Support of mass storage devices with FAT16/32 file system, e.g. USB sticks, USB harddisks, smartphones and tablets (Android only)
Internet Radio: Tune-In (airable)
Gapless playback with WAV, AIFF, FLAC, ALAC, MP3 and DSD
Meta data support
Supported formats: MP3 max. 320 kbit/s VBR/CBR | WAV and AIFF max. 192 kHz / 24 bit | FLAC max. 192 kHz / 24 bit | ALAC max. 96 kHz / 24 bit | AAC | Ogg Vorbis | WMA (only Standard, no Pro and Lossless) | DSD 64

USB interface
Resolution PCM: 44.1 kHz – 384 kHz, 24 bit
Resolution DSD: DSD 64 – DSD 128 (DoP-mode), DSD 64 – DSD 256 (Native DSD-mode)
USB 2.0 Device Interface: USB-Audio Class 2 compatible (High-Speed mode), asynchronous mode operation
Master-Clock: Ultra-Low Jitter, Dual Frequency DPLL-clock

Bluetooth interface
Supported formats: SBC, AAC, aptX
Metadata support
Bluetooth profile: AVRCP, A2DP

Digital/Analog converter
Inputs: two optical (up to 96 kHz) and two coaxial digital inputs (75 ohms, up to 192 kHz) for SPDIF signals (LPCM)
THD & Noise: <0,001% (@ 0dBFS)
Dynamic range: >130dB
D/A converter resolution: 352,8/384 kHz, 32 bit or DSD 256
Converter architecture: two AK 4490 DACs in dual-differential mono-mode, AK 4137 re-sampler
Master-Clock: ultra-low jitter dual-frequency DPLL-Clock
Jitter-reduction of re-sampling process >40 dB
Output voltage: 4 V @ 0dBFS unbalanced, 8 V @ balanced (Volume 99)

Analog pre-amplifier
Inputs: analog line level inputs (RCA) with 20 kOhms input impedance. Maximum input voltage: 8 V unbalanced (RCA)
Outputs: one balanced (XLR) and one unbalanced (RCA) line level outputs. Outputs are independent. Maximum output level: 8 V (unbalanced),16 V (balanced)
Headphone connection: 1/4" (6,35 mm) jack socket for headphones with 32 to 600 ohms impedance
Volume level control range: 0 to 99 with the following characteristic: 0 to 20 in 2 dB steps / 21 to 60 in 1 dB steps / 61 to 99 in 0,5dB steps
Balance control range: +/- 6 dB in 1 dB steps
Gain: 0 dB
Fixed Line Output (FLO) equals volume set to maximum (99), output voltage 4 V @ 0dBFS unbalanced, 8 V @ 0dBFS balanced
Frequency response: 0 - 200kHz (-3 dB)
THD & Noise: < 0,001% @ 4,00V Output

MusicBook 55: The musicbook: 55 is our offer for music lovers who value excellent sound, but also enjoy whooping it up at times. Punchy, well-contoured lows, most delicately sculptured highs and an extremely natural and homogeneous vocal reproduction are the strong points of this new power amplifier.

The musicbook: 55 is a class D stereo power amplifier based on a multi-patented circuit design, the UCD amplifier. Owing to a circuit layout that’s been reduced to the essentials, a discrete circuit design and careful fine-tuning the musicbook: 55 achieves a sound quality that makes a lot of big bolides look pretty much outdated. A sound, so rich in detail, natural and particularly dynamic! Just lend your ear and you’ll be surprised at how good class D can sound these days.

Mains voltage: 100–240 V, 50–60 Hz
Dimensions: 280 x 220 x 65 mm (W x D x H)
Weight: 3.7 kg
Power consumption: 0.5 W standby mode, 1.0 W idle mode, 800 W max.

Protection circuits
DC at output: power supply switches off.
Excess temperature: amplifier goes into mute until the temperature has dropped by approx. 10 °C.
Output current limiter: amplifier goes into mute for ca. 0.25 seconds. Switching threshold 16 A peak. In case of continuous overdrive the amplifier will go on and off several times in a row.

Automatic turn-on
Input signal switching threshold: approx. 0.5 mV.
Idle mode: power supply active, amplifier muted. Power consumption 1.0 W.
Standby mode: only stand-by power supply active. Power consumption 0.5 W.
Active mode: power supply and amplifier both active. Power consumption depending on volume level 20-50 W average, 800 W max. peak power.
Switch-on times: approx. 2 seconds from idle to active mode; approx. 8 seconds from standby to active mode.
Switch-off times: after 20 minutes the amplifier will return to idle mode, after another 20 minutes to standby mode.