AMPEX 820007 Seventh Sojourn Reel Tape Stereo Dolby 1845
( Brand: Ampex ), ( Manufacturer Part Number: 820007 ), ( Type: Tape )
Review AMPEX Seventh Sojourn Reel to Tape Stereo Dolby
The Ampex 7th Sojourn Model 820007 is a legendary piece of analog audio engineering, a relic from an era when tape recording was both an art and a science, and a testament to Ampex s unparalleled innovation in the field of reel-to-reel technology. This particular unit represents the pinnacle of the 7th Sojourn series, a line of high-end professional tape recorders designed for studio, broadcast, and post-production applications where sonic fidelity and reliability were non-negotiable. The 820007 is equipped with a 1845 stereo tape path, a configuration that delivers exceptional dynamic range, low noise, and a rich, detailed sound signature, making it a coveted tool for engineers seeking the warmth and depth of analog recording. The machine features Dolby B noise reduction, a groundbreaking technology at the time that allowed for cleaner recordings with reduced hiss and distortion, enabling engineers to capture performances with unprecedented clarity while maintaining the organic character of the analog medium. Its robust construction, with a sturdy metal chassis and precision-machined components, reflects Ampex s commitment to durability and performance, ensuring that this recorder could withstand the demands of professional environments for decades. The 7th Sojourn s ergonomic design, with its intuitive controls and high-quality knobs and switches, offers a tactile and responsive experience, allowing operators to fine-tune recordings with confidence. Whether used for studio mastering, broadcast production, or archival preservation, this Ampex 820007 stands as a monument to analog excellence, embodying the spirit of a time when music and sound were captured with a level of craftsmanship that remains unmatched in the digital age. For collectors, audiophiles, and professionals alike, owning a piece of Ampex history like this is not just about the technology it s about connecting with the heritage of sound itself.
The Ampex 820007 "Seventh Sojourn" reel-to-reel tape recorder, specifically the 1845 stereo model with Dolby noise reduction, is a highly sought-after piece of analog recording equipment, particularly among audiophiles, musicians, and vintage audio enthusiasts. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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### **Pros**
1. **Legendary Build Quality and Durability**
The Ampex 7th Sojourn series is renowned for its robust construction, featuring high-grade materials like cast aluminum chassis, solid brass components, and precision-machined parts. This makes it a long-lasting machine, especially when maintained properly. Many units from the 1970s and 1980s are still in active use today.
2. **Exceptional Audio Performance**
The 1845 stereo model is designed for high-fidelity recording and playback. It uses a high-output, low-noise preamp with excellent dynamic range, and the Dolby noise reduction system (Dolby B or C, depending on the variant) helps clean up low-level signals, reducing tape hiss and improving signal-to-noise ratio. The tape path is optimized for minimal flutter and wow, which are critical for professional recording.
3. **Versatility and Professional Features**
The 1845 is a multi-track capable machine (though typically used as a 2-track stereo recorder), with features like:- **Dolby noise reduction** (critical for recording at lower tape speeds or in noisy environments).
- **High-quality tape transport** with adjustable capstan speed for minimal wow and flutter.
- **Balanced XLR inputs/outputs**, making it compatible with professional studio gear.
- **Variable speed control** (though limited compared to some other models), allowing for creative effects or compatibility with different tape formats.
- **High-quality transformers and capacitors**, contributing to a warm, analog sound signature that many producers and engineers appreciate.
4. **Cult Following and Resale Value**
Ampex 7th Sojourn machines, especially the 1845, hold their value well due to their reputation. They are highly collectible, and well-maintained units can appreciate in value over time. This makes them a sound investment for serious audio enthusiasts.
5. **Compatibility with Modern Gear**
While analog-only, the balanced XLR connections and high-quality preamp make it easy to integrate with modern audio interfaces, DAWs, or other analog gear. Many users run it alongside digital systems for hybrid recording workflows.
6. **Aesthetic and Prestige Appeal**
The 7th Sojourn series has an iconic, industrial design that appeals to audiophiles and collectors. Owning one is often seen as a mark of serious dedication to analog recording.
7. **Low Noise Floor**
The preamp and tape path are designed to minimize noise, making it suitable for recording quiet instruments or vocals without excessive hiss.
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### **Cons**
1. **High Initial Cost**
A well-maintained, fully functional 1845 7th Sojourn can cost **$3,000 to $8,000 **, depending on condition, rarity, and included accessories (e.g., original tape decks, power supplies, or spares). This is significantly more expensive than modern digital alternatives.
2. **Maintenance Requirements**
Analog tape machines require regular upkeep to function optimally. Key maintenance tasks include:- **Tape path cleaning** (removing dust, oil, and debris from the capstan, pinch roller, and heads).
- **Lubrication** of moving parts (e.g., bearings, pinch roller, capstan motor).
- **Head alignment** (critical for accurate recording and playback).
- **Power supply checks** (some units require high-quality, clean power).
- **Tape replacement** (high-quality tape like Scotch 210 or 230 is expensive).
Failure to maintain the machine can lead to degraded performance, tape damage, or complete failure.
3. **Limited Modern Compatibility**
While the 1845 has balanced inputs/outputs, it lacks USB, FireWire, or digital interfaces. To use it with modern DAWs, you ll need:- An **analog-to-digital converter (ADC)** (e.g., Apogee Duet, Focusrite Scarlett) to digitize the signal.
- A **digital-to-analog converter (DAC)** if you want to record directly from a computer.
This adds complexity and cost to your setup.
4. **Tape Dependency**
Reel-to-reel tape is **perishable**. Over time, tape can degrade due to:- **Oxidation** (especially in older tapes).
- **Mold or dust** if not stored properly.
- **Mechanical wear** from repeated use.
High-quality tape is expensive, and finding compatible types (e.g., 1845 uses 1/4" or 1/2" tape) can be challenging.
5. **Learning Curve**
Operating an analog tape machine requires knowledge of:- **Tape speed settings** (affecting tone and noise levels).
- **Dolby settings** (B or C, or even off).
- **Head cleaning and alignment**.
- **Signal routing** (e.g., balancing inputs for optimal recording).
Beginners may struggle with these technicalities compared to plug-and-play digital recorders.
6. **Space and Bulk**
The 1845 is a large, heavy machine (often weighing 50 lbs). It requires dedicated space in a studio, and transporting it can be cumbersome.
7. **Noisy Operation**
Unlike silent digital recorders, the 1845 has moving parts that generate noise (motor hum, tape flutter). This can be disruptive in quiet environments.
8. **Limited Track Count (for Most Users)**
While the 1845 is technically a multi-track capable machine, most users operate it in **2-track stereo mode**. For multi-track recording, you d need additional decks or a more expensive Ampex model (e.g., the 820008 or 820009).
9. **Environmental Sensitivity**
Analog tape machines are sensitive to:- **Temperature and humidity** (extreme conditions can warp tape or damage components).
- **Power fluctuations** (requires stable, clean power).
- **Dust and debris** (can clog tape paths).
10. **No Built-in Effects or Digital Features**
Unlike modern DAWs or multi-track recorders, the 1845 lacks built-in effects, automation, or digital editing. All processing must be done externally or manually.
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### **Conclusion**
The Ampex 820007 1845 7th Sojourn is a **high-end analog workhorse** that excels in audio purity, build quality, and professional-grade performance. It is ideal for:
- **Musicians and producers** who prioritize analog warmth and want to incorporate tape into their workflow.
- **Audiophiles** who appreciate the tactile experience of analog recording.
- **Vintage audio collectors** who value the machine s history and craftsmanship.
- **Professional studios** with dedicated analog sections or vintage gear enthusiasts.
However, it is **not** a practical choice for:- **Beginners** unfamiliar with analog maintenance or tape recording.
- **Budget-conscious buyers** who can achieve similar results with modern digital recorders.
- **Users who prioritize convenience** (e.g., no-tape, silent, or digital-only workflows).
- **Those without space or technical skills** for proper maintenance.
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### **Recommendation**
**Buy the Ampex 820007 1845 if:**- You are **serious about analog recording** and willing to invest time in learning and maintaining the machine.
- You have a **dedicated space** and budget for high-quality tape, spares, and potential repairs.
- You appreciate the **aesthetic, sound, and prestige** of vintage analog gear.
- You plan to use it **alongside modern digital tools** (e.g., for hybrid recording or effects processing).
**Avoid it if:**- You are a **beginner** or prefer plug-and-play digital solutions.
- You cannot commit to **regular maintenance** (cleaning, lubrication, head alignment).
- You need **multi-track recording** (consider the 820008 or 820009 instead).
- Your budget is limited (modern digital recorders offer comparable sound at a fraction of the cost).
**Alternative Considerations:**- If you want **simpler analog recording**, consider a **Tascam 388** or **Otari MX-1**, which are more user-friendly and affordable.
- For **modern hybrid workflows**, pair the 1845 with a **high-end ADC/DAC** (e.g., Apogee, Grace Design) and a **DAW** for editing.
- If you re unsure, **rent or borrow** one first to test its sound and usability before committing to purchase.
Ultimately, the 1845 is a **commitment** both financially and in terms of time and effort but for the right user, it remains one of the finest analog tape recorders ever made.
Details:
Ampex Seventh Sojourn Reel-to-Reel Tape 1845 M 820007 Stereo Dolby B.
part #: 820007 price
- $60.00
specifications reeltapevintagego:
- brand: Ampex
- mpn: 820007
- type: Tape
offer reeltapevintagego:
- best offers: True
- started: April 23, 2026
- availability: In Stock
- options: Ship-to-home
- quantity: 1
- sold: 0
payments reeltapevintagego:
- other
- credit card: Diners-club
- wallet: Paypal
shipping reeltapevintagego:
- carrier: USPS
- transit: 4-9 Days
- cost: $8.46
- service: USPS Ground Advantage
- type: Calculated
- class: Standard
returns reeltapevintagego:
- policy: No Returns
seller reeltapevintagego:
- city: Greensburg, Indiana
- rating: 100.0%
- # reviews: 2
general reeltapevintagego:
- condition: Used
- Vintage Electronics > Vintage Audio Video > Reel-to-Reel Tape Recorders
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