Universal Audio SOLO/610 – Classic Tube Mic Preamp & DI Box

OVERVIEW

The Universal Audio SOLO/610 brings the legendary warmth and character of the classic Putnam 610 tube console to a compact and versatile mic preamp and DI. Designed for both studio and stage, this all-tube preamp delivers vintage analog warmth while maintaining modern flexibility. With a continuous Gain control for fine-tuned signal structuring, selectable dual impedance settings, and essential DI features, the SOLO/610 enhances any microphone or instrument with its signature smooth, harmonically rich tone.

Housed in a rugged steel chassis, the portable SOLO/610 is perfect for desktop use, live performance, and studio recording, making premium tube preamp sound accessible to home and professional studios alike.

KEY HIGHLIGHTS

Legendary Tube Sound in a Portable Format:

The SOLO/610 captures the warm, harmonically rich character of the iconic Putnam 610 tube console. Its vintage tone is perfect for vocals, instruments, and DI tracks, offering studio-grade sound in a portable design.

Versatile Controls for Total Tonal Shaping:

With continuously variable Gain and Level controls, the SOLO/610 lets you dial in everything from clean warmth to thick saturation. The unit’s tonal versatility makes it suitable for a wide range of sources and styles.

Impedance Selection for Maximum Compatibility:

Selectable impedance settings on both mic and instrument inputs ensure compatibility with a variety of mics and pickups. Whether you’re recording a condenser mic or a vintage bass, you’ll always get optimal tone.

Built for the Studio, Stage, or Desktop:

Housed in a rugged steel chassis, the SOLO/610 is as durable as it is beautiful. Its compact footprint and sturdy build make it ideal for desktop setups, live rigs, or studio racks.

Hand-Built in the USA:

Each unit is hand-assembled with premium components at Universal Audio’s California Custom Shop – ensuring authenticity, performance, and longevity in every detail.

FEATURES

• Classic Putnam 610 tube console mic preamp & DI for rich, vintage warmth
• Legendary all-tube design for smooth, natural harmonics
• Continuously variable Gain and Level controls for tonal versatility
• Selectable impedance (Hi-Z/Lo-Z) for mic and DI inputs
• Phantom power, Lo-Cut filter, and Phase Reverse for flexible recording options
• DI features include Thru output for amp integration, Ground Lift, and Mic/Line output selection
• Portable and rugged steel chassis for studio, desktop, or stage use
• Hand-built in the USA

TECHNICAL SPECS

Input Impedance:

• Mic Input: Selectable 450 ohms (Lo-Z) or 1.6 kilohms (Hi-Z)
• DI Input: Selectable 2.2 megohms (Lo-Z) or 50 kilohms (Hi-Z)

Output Load Impedance:

• 20 Hz to 20 kHz ±1 dB

Gain:

• Maximum Mic Input Gain: 61 dB
• Maximum Instrument Input Gain: 37 dB

Tube Complement:

• (1) 12AX7, (1) 12AT7

Maximum Input Levels:

• Mic Input: -12 dBu @ 1.0% THD+N
• Instrument Input: +4 dBu @ 1.0% THD+N

Frequency Response:

• Mic/Instrument Input: 20 Hz to 20 kHz, ±0.1 dB

Physical Specifications:

• Dimensions: 14″ (L) x 5.75″ (W) x 5″ (H)
• Weight: 9 lbs

Additional Information:

• Tube or Solid State: Tube
• Channels: Single-Channel
• Chassis: Desktop
• Direct Input: Yes
• Digital I/O: No