Preamp was in use on several occasions but unused in a rack last 2 years. In good working condition. It may have some minor scratches

The TL Audio Ivory 2 Series 5051 is a single-channel hybrid valve (tube) processorfor studio recording, combining a preamp, compressor, 4-band equalizer, and noise gate in one unit. It is designed to add a warm, rich, and "valve sound" character to audio signals, particularly vocals, bass, and other instruments. Key Features and Components

• Hybrid Design: The unit uses both low-noise solid-state electronics and classic valve circuitry (specifically, three ECC83 dual-triode tubes) to produce a high-quality signal path with unique audio character.
• Preamplifier: It features mic, line, and instrument (DI) inputs with controls for gain, 48V phantom power, a 90Hz high-pass filter, and a 30dB pad, making it versatile for various sources. Reviewers have praised the instrument input for its high impedance, which works well with instruments like bass guitar.
• Compressor: The compression section offers fully variable controls (threshold, ratio, gain make-up) with switchable attack/release times and both hard and soft-knee options. The gain control element avoids VCAs for a smooth, open sound, and a sidechain insert point is available for frequency-conscious compression (e.g., de-essing).
• Equalizer: The 4-band EQ is based on TL Audio's EQ-1 design and can be placed before or after the compressor in the signal path. The LF and HF bands can be switched to act as variable-frequency shelving filters for added flexibility.
• Noise Gate: An optical gate with a variable threshold helps control unwanted noise, a useful feature when applying significant compression.
• Metering and Connectivity: An illuminated VU meter monitors input level, output level, or gain reduction. The unit includes balanced XLR and unbalanced jack inputs/outputs and can be stereo-linked with a second 5051 unit for processing stereo signals. An optional 24-bit digital output card (DO-2) was also available.