Aesthetix Callisto Eclipse

Aesthetix Callisto Eclipse

All-Tube Linestage Preamplifier

Aesthetix Callisto Eclipse
Aesthetix Callisto Eclipse
Aesthetix Callisto Eclipse
35.950,00 Price include 21% VAT Price exclude VAT € 29.710,74
Callisto is an all-tube linestage suitable for the most demanding audio systems and listeners. Fully balanced circuitry from input to output, including internal balancing of single-ended inputs, results in common mode signal rejection and cleaner sound. The innovative discrete switched resistor volume control maximizes resolution at any listening level. A separate power supply chassis removes any possibility of transformer noise corrupting the delicate audio circuitry. Peter Moncrief Stealth Capacitors are used in the Eclipse Edition for unparalleled sound quality.

- Fully balanced differential circuitry with ability to internally balance a single-ended input signal.
- Innovative and unique mechanically switched discrete resistor volume control with 46 positions using Roederstein resistors.
- Separate volume controls and input selectors for each channel.
- All tube amplification and output (8 tubes total).
- Separate vacuum tube regulated power supply utilizing 8 tubes.
- Two sets of XLR and two sets of RCA outputs per channel.
- Six inputs: First two single-ended (rca) or balanced (XLR); remaining four single-ended (rca) only.

Dual Power Supply
Callisto comes with a single power supply standard, or optionally a second power supply may be added for true dual-mono (see "Power Supply" tab above for more detail).

One defining characteristic of the Jupiter Series is separate power supplies. Each main unit, or audio chassis, is dual mono in construction; there are completely separate left and right audio boards and each has its own power connector on the rear of the chassis. Each main unit requires at least one power supply, a single power supply cannot power both an Io and a Callisto. There are two versions of power supply available: Stereo or Dual Mono. In the stereo configuration, a single power supply powers both audio channels and has two power connectors on the rear. In the Dual Mono configuration, two separate power supplies are used, each with a single power connector. In the Dual mono configuration, the unit becomes pure dual mono, all the way down to the ac wall connection! The Jupiter Series Power Supply is the size of a power amplifier and weighs approximately 50 pounds. The Power Supply has two main sections, the heater supply and the high voltage plus and minus supplies. At the heart of the heater supply is its massive, low flux, 210 VA power transformer which has fourteen separate secondary windings that are individually regulated and supply both the Power Supply and main unit heaters. The high voltage supply is composed of a similar massive 170 VA transformer which feeds a common-mode choke input filtering network and then high current vacuum tube regulators (one EL34/6CA7, three 12AX7 tubes per regulator). Each regulator is capable of supplying 600 volts at 100mA. There are two such regulators in the Power Supply. Each separate amplification or buffer stage has its own power supply filtering network and regulated heater supply to isolate individual sections and prevent stage interaction.

Remote Control
Remote control is optional with the Callisto. Adding the system allows remote adjustment for volume and muting, and optionally phase. The remote system uses motors and pulleys to rotate the volume controls and has a completely isolated electrical system.

The Callisto may optionally be configured with remote control. This is not your average remote control, it is an entire system consisting of a main remote receiving / control unit and large stepper motors that turn the volume controls through a belt drive system. The system is completely electrically isolated from the Callisto, there is not even a ground connection between them! Audio performance of the Callisto is not compromised in any way with the addition of the remote control system.

Main unit
The main control unit contains the power supplies necessary to drive the stepper motors, the IR receiver, control system and displays. The display is a large four-digit blue LED numeric, which can indicate both left and right volume levels at the same time. There are four buttons on the main control unit: Volume Up, Volume Down, Mute and Phase.

The main control unit is connected to the Callisto through an RS232 cable. Inside the Callisto, there are two large high-torque stepper motors (one per channel) that are connected to the volume shafts through belts and pulleys. Also at each volume control is an optical sensor system that allows the remote system to determine if the user has manually changed the volume control and display the change.

A small circuit board is added at the rear of the Callisto with muting relays. These relays are not in the signal path, they simply short the output signal to ground when muted.

This is an option with the remote system. Two small circuit boards are added with phase relays.

Handheld remote
The handheld remote provides direct access to the following functions:
   Volume Up
   Volume Down
   Balance Left
   Balance Right
   Phase (optional)

- Inputs: Six inputs: First two single-ended (rca) or balanced (XLR); remaining four single-ended (rca) only
- Outputs: 2 RCA (SE) and XLR (balanced), 1 tape RCA
- Line level gain: 23 dB single ended (SE), in/out, and 29 dB balanced/out
- Volume control: switched resistor network volume control with 46 steps
- Front panel controls: Left and right input select, left and right volume
- Remote controls(optional): Volume, mute, balance, phase (option)
- Frequency response: +- 0.25 dB, 20 Hz - 20 Khz
- Signal to noise: measured at 70 dB minimum, A-weighted (ref 1 mv input, 75 dB gain setting)
- Line input impedence: 100K ohms SE, 200K ohms balanced
- Output impedence: 1K ohms SE, 600 ohms balanced
- Recommended amplifier load: 10K ohms or greater (SE), 20K ohms or greater (Balanced)
- Tubes, each channel: (line section) V1 (6922), V2 (12AX7), V3 (6922), V4 (6SN7)
- Power consumption: 300 watts

Physical dimensions:
- Main unit, MkII or Signature: 5 5/8" high, 19" wide, 18" deep including jacks
- Main unit, Eclipse: 5 1/2" high, 17 1/2" wide, 18" deep including jacks
- Power supply, MkII or Signature: 5 5/8" high, 19" wide, " deep including jacks
- Power supply, Eclipse: 5 5/8" high, 17 1/2" wide, 18 1/4" deep including jacks

Shipping weights:
- Main unit, MkII or Signature: 42 Lbs
- Main unit, Eclipse: 47 Lbs
- Power supply, MkII or Signature: 50 Lbs
- Power supply, Eclipse: 55 Lbs


"Simply phenomenal inner detail, vast soundstaging, and a dynamic and harmonic bloom that seems to bring every kind of music to vivid life"
The Absolute Sound Golden Ear Award

"The Callisto is as fast, neutral, dynamic and authoritative as any preamp I've ever heard, solid-state or not... entirely worthy of the high esteem in which it's been held..."
Shane Buettner, Audio Perfectionist Journal

"Stunning dynamics, remarkable transparency, and a life-like recreation of space and volume... jaw-droppingly three-dimensional"
Wayne Garcia, The Absolute Sound

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User manual

Callisto Remote Control Owner's Manual

Callisto Tube Placement