Description

KRYO Symphony XR 200

High Fidelity Class AB Stereo Power Amplifier

The KRYO Symphony XR 200 is a high-fidelity Class AB stereo amplifier engineered for natural sound reproduction, low distortion and reliable performance. Designed with careful attention to circuit design, power supply stability, component selection and thermal management, the XR 200 delivers a refined listening experience with clean highs, open mids and controlled bass.

With its premium internal components, substantial power supply, passive cooling system and minimalist aluminium front panel, the XR 200 combines serious engineering with an elegant, understated design.

Key Features

• High Fidelity Class AB stereo amplifier
• Sliding Bias design with operation up to approximately 3W in Class A
• ON Semiconductor MJL21193 / MJL21194G output transistors
• Four high-power output transistors per channel
• 78,000µF total power supply capacitance
• 600VA toroidal transformer with 100% copper winding and CRGO core
• Ultra-low distortion and low-noise performance
• Large passive heatsink for silent operation
• Comprehensive speaker and amplifier protection
• Premium 10mm aluminium front panel
• Minimalist design with a white-ring illuminated power switch

Technical Specifications

Audio Performance

• Input Impedance: 33kΩ
• Signal-to-Noise Ratio (SNR): 110dB
• Damping Factor: Greater than 300 at 20Hz and 1kHz
• Slew Rate: 40V/µs
• Frequency Response: 10Hz–50kHz (−1dB)
• THD at 50W: 0.001% at 1kHz
• THD at Rated Power: Less than 0.01% from 20Hz to 20kHz at 4Ω
• Crosstalk: 90dB

Power Output

• 100W RMS × 2 channels at 8Ω
• 150W RMS × 2 channels at 4Ω
• Maximum Unclipped Output Voltage: 29V at the speaker terminals
• Recommended Speaker Impedance: 4Ω and above

Operation with speaker loads below 4Ω is not recommended.

Amplifier Circuit & Output Stage

The XR 200 employs a Hi-Fi Class AB circuit featuring a Sliding Bias design, allowing operation in Class A at lower output levels of up to approximately 3W, before transitioning to Class AB operation as required.

The output stage uses four ON Semiconductor MJL21193 / MJL21194G power transistors per channel, selected for their suitability for high-power linear audio amplification.

Power Supply

• Transformer Rating: 600VA
• Transformer Type: Toroidal
• Winding: 100% Copper
• Core Material: CRGO
• Total Filter Capacitance: 78,000µF
• Filter Capacitors: CDM USA, 39,000µF each

The high-capacitance power supply is designed to provide stable DC rails, effective ripple filtering and improved voltage stability during demanding musical passages.

Components & PCB

The amplifier incorporates FR4 printed circuit boards manufactured by JLCPCB and carefully selected components from established manufacturers, including:

• Würth Elektronik
• Vishay
• Rubycon
• Toshiba
• UTC Semiconductor
• ON Semiconductor
• ISC
• Fairchild
• STMicroelectronics

Component selection is based on circuit requirements and performance rather than simply using premium-priced components throughout.

Protection & Safety

The KRYO Symphony XR 200 incorporates protection and startup management features designed to safeguard the amplifier and connected loudspeakers.

• DC offset protection
• Speaker short-circuit protection
• Overload protection
• Underload protection
• Thermal protection
• Inrush current limiter / soft-start circuit
• Speaker protection relay
• Two onboard status indication LEDs

An OMRON relay is used in the speaker protection circuit. The startup and shutdown design is intended to minimise unwanted pops and thumps.

Cooling System

The XR 200 uses a large vertical-fin heatsink measuring approximately 200 × 100 × 50mm.

Its passive cooling arrangement eliminates the need for cooling fans, ensuring silent operation without fan noise or fan maintenance. Ventilation openings on the top and bottom panels assist natural heat dissipation.

Chassis & Connectivity

Chassis and Front Panel

• Steel chassis construction
• 10mm thick aluminium front panel
• Natural Silver Anodized Aluminium finish
• Minimalist front panel with a round white-ring LED power switch

Rear Panel Connections

• Standard IEC mains power inlet
• 230V AC, 50/60Hz mains input
• 5-way binding posts compatible with banana plugs
• Gold-plated REAN NYS367 RCA audio input terminals

Warranty & Service

The KRYO Symphony XR 200 includes a 1-year servicing warranty.

Courier pickup and service arrangements are available for most Indian pincodes. Where pickup service is unavailable, the amplifier must be sent to our office for servicing.

Warranty exclusions:

• Physical damage
• Unauthorised servicing or modifications
• Damage resulting from alterations or improper handling

Demo opportunities may be available for customers who wish to experience the amplifier before purchasing.

Designed for Serious Music Listening

The KRYO Symphony XR 200 brings together carefully selected components, a substantial power supply, a high-quality transistor output stage and silent passive cooling in a clean, premium chassis.

Built for listeners who value natural presentation, low distortion and dependable engineering, the XR 200 is designed to deliver an engaging and comfortable listening experience for extended sessions.

KRYO — Built for the way music should sound.