RCA Ba-73C UTC trafo 50/60’s

RCA BA-73c Vintage Discrete Mic Preamp Module – UTC LR878 + SAE-193 – Recapped – Broadcast Rare

🔥 TRUE US BROADCAST SOUND – ORIGINAL RCA MODULE 🔥

For sale: a rare RCA BA-73C, a removable preamp module from an American broadcast console from the 1950s and 1960s. An absolute classic for those seeking true vintage analog sound.

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### ⚙️ Technical Specifications

- Model: RCA BA-73C

- Type: Microphone/Line Preamplifier

- Format: Drawer Module (Broadcast Drawer)

- Original UTC Transformers Installed:

- UTC LR878 → Input Transformer (Typically Used for Microphone/Low Impedance Matching of Tube Stages)

- UTC SAE-193 → Output/Interstage Transformer for Line Coupling

- UTC Transformers Known for:

- Extended Frequency Response (Typically 20 Hz – 20 kHz or Greater)

- Low Distortion and High Efficiency

- Highly Permeable Alloy Construction (Hipermalloy) for Maximum Audio Quality (technicalaudio.com)

- Recapped (Capacitors Replaced → Greater Reliability)

- Original Comb/Connector Present

- Discrete Components, Construction Military/Broadcast

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### 🎧 Sound

- Warm, full, and three-dimensional tone

- Natural tube saturation

- Typical "American broadcast tone"

- Perfect for:

- Vocals

- Guitars

- Bass

- Characterful analog outboard

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### 📦 Condition

- Aesthetics: Very good for its age

- Technical: Refinished, not tested for function in all configurations → Final inspection recommended

- Original UTC transformers installed

- Complete with comb connector

- Sold AS IS

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### 💡 Perfect for

- Analog recording studios

- High-end DIY projects / custom racks

- Broadcast equipment restoration

- Vintage RCA audio collectors

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### 🚚 Shipping

- Professional packaging

- Tracked shipping

- Possible Local pickup

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📩 Contact me for further details, measurements, or high-resolution photos!

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