Description

Trafomatic Glenn Mono Power Amplifier

Parallel Single-Ended 300B – Handcrafted Class A Mono Block

DHT SET Amplifier

The Trafomatic Glenn Parallel Single-Ended 300B Mono Amplifiers are the latest statement from Trafomatic Audio, combining elegant design, precise engineering, and unmatched sonic purity. Handcrafted with care, these monoblocks are designed with the shortest possible signal paths and premium components, ensuring that every note is delivered with exceptional clarity, depth, and musicality. With over 30 years of experience in tube amplifier design, Sasa Cokic has brought together technical expertise and artisanal craftsmanship to create an amplifier that is both a high-performance instrument and a work of art.

The Glenn was conceived as a bridge between Trafomatic’s Experience 2 MK II and the Experience Reference 300B, combining the power and authority of the Reference series with the versatility and flexibility of the Experience. This design allows the Glenn to accommodate nearly any 300B tube available on the market, making it one of the most adaptable and universal 300B amplifiers produced today. Users can also fine-tune the negative feedback between 0 dB and -3 dB in 1 dB increments, offering precise control over tonal balance and sound character.

Features

• Parallel Single-Ended 300B Design – Combines the warmth and harmonic richness of 300B tubes with increased output and dynamic authority.

• Interstage Transformer Coupling – Smooth and efficient signal transfer between driver and output stages.

• C-L-C Anode Voltage Filter – Uses Mundorf MLytic HV capacitors and high-inductivity filter chokes made by Trafomatic Audio to deliver clean, stable power.

• Oversized II C-Core Transformers – Both main and output transformers are oversized for wide bandwidth, minimal leakage inductance, and extended dynamics.

• Premium Connectors and Tube Sockets – Includes WBT terminals and Teflon sockets for pure signal transfer and reliable long-term operation.

Construction & Tubes

Each Glenn monoblock features:

• Two direct-heated 300B triodes as output tubes

• One E182CC NOS driver tube

• One 5U4G tube rectifier

The amplifier incorporates a 6 kg epoxy-potted double C-core output transformer, a 10 kg main power double C-core transformer, a high-inductivity filter choke, and a carefully designed interstage transformer. All components are handwired using high-quality materials, preserving the integrity of the signal path and allowing the amplifier to reveal the full depth, richness, and nuance of the music.

Highlights

• Parallel Single-Ended 300B mono block

• Class A operation

• Two direct-heated 300B output tubes per amplifier

• E182CC NOS driver tube and 5U4G rectifier

• Oversized II C-core main and output transformers

• C-L-C anode voltage filter with high-quality capacitors and filter choke

• Handcrafted, point-to-point wiring

• Adjustable negative feedback (0 dB to -3 dB)

• Premium WBT connectors and Teflon tube sockets

• Designed for use with a wide range of 300B tubes

Specifications

• Amplifier Type: Parallel Single-Ended 300B Mono Block, Class A

• Output Tubes: Two direct-heated 300B triodes

• Driver Tube: E182CC NOS

• Rectifier Tube: 5U4G

• Output Power: ~8 W per mono block (typical for 300B SET design)

• Interstage Coupling: Transformer

• Frequency Response: 20 Hz – 20 kHz

• THD: <1% at rated output

• Signal-to-Noise Ratio (SNR): >90 dB

• Input Impedance: 47 kΩ

• Output Impedance: 4 / 8 Ω selectable

• Dimensions (per unit): 430 × 300 × 250 mm (W × D × H)

• Weight (per unit): 35 kg

• Power Requirements: 230 V / 50 Hz (or local standard)

Sound & Philosophy

The Glenn is built around purity and simplicity. Minimal components, handwired circuits, and thoughtfully selected audiophile-grade parts maintain the primal qualities of sound reproduction. The result is a listening experience with natural tonal textures, remarkable dynamic contrast, and emotional engagement that draws the listener into the performance.

Whether paired with high-efficiency speakers or part of a reference-level system, the Glenn mono blocks provide both power and finesse, delivering a musical performance that is simultaneously commanding and intimate. Every element, from transformer design to tube selection, is engineered to enhance musicality while maintaining technical precision.

The Trafomatic Glenn 300B Mono Power Amplifier delivers unmatched tonal purity, effortless musicality, and finely tuned performance, making every listening session a truly immersive experience.

Source:
https://www.trafomaticaudio.com/products/glenn/?portfolioCats=12#