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Thoebe II

Stereo Preamplifier


Flexibility and Control

  • Description
  • Features
  • Specifications
  • Reviews
  • Downloads

SST proudly presents the all-new Thoebe II preamplifier. Fitted with the refinements and features one expects of a modern-day preamp, the Thoebe II will deliver all of your music with style and beauty at an attractive price.

Impressive standard features include a highly transparent volume control, bass and treble tone controls, high/low gain settings and a world-class headphone amplifier. Additionally, the Thoebe II can be configured with available add-on options like a reference-level DAC and/or phonostage. The Thoebe II is about ultimate control and flexibility—the perfect preamplifier for any music source. 

Deriving its lineage from its award-winning mother, the Ambrosia 2000 Second Edition preamplifier, but boasting more than a few unique features in it’s own right, the Thoebe II is destined to be a classic in its own time. Invite the Thoebe II into your listening room and find out quickly what kind of “guest” has arrived—one that won’t be leaving anytime soon!

  • Optional DAC and/or phonostage: 
    • DAC
      • ESS Sabre (9018) 32-bit DAC chip
      • Asynchronous, galvanically isolated USB input supports up to 32-bit 384kHz PCM and DSD64 + DSD128
    • Phonostage
      • Moving magnet discrete Class A design and newly developed RIAA optimized topology
  • Powerful and transparent built-in Class A headphone amplifier, standard
  • Digitally-controlled, channel independent, highly-advanced tone control
  • Remarkably transparent and innovative resistive-ladder type volume control unique to the Thoebe II
  • High/low gain setting
  • Phase and balance controls
  • Large, easy-to-read (and dimmable) LED display
  • Internal USB connection for any future software updates
  • Optional solid billet aluminum full-function remote control
  • Heavy gauge steel case and thick anodized aluminum faceplate



  • Inputs
    • Phono: 42dB
    • Line (balanced and unbalanced): 19dB high gain, 16dB  low gain
  • Tone Controls
    • ± 5dB nominal
    • Turnover points: Bass 300Hz; Treble 3kHz nominal
  • Maximum Output
    • 10V RMS unbalanced
    • 20V RMS balanced
  • Input Impedance
    • 62kΩ unbalanced
    • 100kΩ balanced
  • Output Impedance
    • 50Ω, all outputs
  • Headphone Output
    •  1Ω, 388mW (300Ω)
  • Noise (Awt)
    • MM: 70µV (22µV with 400-20kHz filter)
    • Line: 10µV unbalanced, 18µV balanced
  • THD (Awt, 20Hz-20kHz)
    • .006% max inputs to main outputs @ 1V RMS rated output
  • Frequency Response
    • Phono: ± 1.2dB max deviation (5mV in, RIAA Equalized, 20Hz–20kHz)
    • Line: 20Hz–20kHz, ± 0.25dB max deviation
  • Dimensions
    • 14⅝" L x 17½" W x 4â…›" H 
  • Weight:
    • Without phonostage: 25 lbs.
    • With phonostage: 28 lbs.


Thoebe II

Thoebe II DAC driver (required for Windows only)