Triodecraft300B-SEnewTriodecraft 300B-SE Monoblock Power AmplifierSpecial Offer: $3000 Off Regular Price and Free Domestic US Shipping, 14-Day Returns. Includes Free Upgrade Psvane 300B TII Power tubes with purchase. Ends on August 31, 2019. Single-Ended Trio...11900.00

Triodecraft 300B-SE Monoblock Power Amplifier

Listing ID: lis9eji0 Classified 
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Time Left: 16 Days


Asking Price: $11,900.00

New Retail Price: $14,900.00

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Payment methodsPaypal card
Ships fromLAS VEGAS, NV, 89113
Ships toUnited States
Package dimensions26.0" × 26.0" × 12.0" (56.0 lbs.)
26.0" × 26.0" × 12.0" (56.0 lbs.)
Shipping carrierFedEx
Shipping costFree
Original accessoriesBox, Manual
Agon miniAverage Research Pricing

Special Offer: $3000 Off Regular Price and Free Domestic US Shipping, 14-Day Returns. Includes Free Upgrade Psvane 300B TII Power tubes with purchase. Ends on August 31, 2019.

Single-Ended Triode amplifiers excel in clarity and dimensionality compared to solid state and push-pull amplifiers. SET amplifiers capture the presence and fine detail of a live musical performance similar to the sound of great analog vinyl records. A well designed tube-based SET amplifier is the audiophile's choice for true high fidelity sound reproduction.​ Our TriodeCraft 300B monoblock power amplifier achieves this goal. ​
Single-ended circuits are simple: As close to “straight wire with gain” with a minimum number of discrete component parts. “Brick wall” Class-A constant current source power supply. Electrons flowing through a vacuum instead of a piece of silicon. TriodeCraft's proprietary circuit design and quality component parts advances 'classic old school' SET circuits to the highest performance level. Listening impression: The TriodeCraft 300B power amplifier presents music very dynamically; Tight powerful bass and midbass, uncanny midrange dimensionality, and extended open highs thanks to a large capacity power reservoir and superlative transformer design. Reference level performance for the avid music lover.
Dual chassis monoblock construction dedicates an amplifier for each speaker system for the lowest distortion and highest musical clarity. Advanced circuit design and quality component parts ensure long term reliability.​​ The TriodeCraft 300B power amplifier is a serious no compromise design.

Our 300B power amplifier includes a separate Power Supply and Audio Unit for each channel. This design offers optimal parts layout, complete isolation of magnetic fields, and less unit weight for ease in handling and placement.

Features and Specifications

  • Discrete Power Supply and Amplifier Unit chassis. Shielded solid walnut hardwood frames and black powder coated aircraft grade aluminum plates. High strength alloy steel assembly hardware and non-magnetic stainless steel fasteners.​
  • Custom built Mega-core M6 laminated silicon steel transformers and chokes with low resistance OFC (copper) windings.
  • High current, high voltage Super Regulated multi-pole power supply serves each vacuum tube individually. Low ESR/ESL polypropylene film/copper foil capacitors. ​Low ESR/ESL polypropylene film/copper foil capacitors employed in cathode circuits.​​
  • Ohno process 6N silver bonded copper in Teflon point-to-point wiring. Lead-free RoHS approved silver solder. Star-home run ground points.​​ Dual isolated ground planes.
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  • CMC gold/copper RCA Jacks and EIZZ low mass EU Spec gold/copper binding posts (banana and spades).​​​ NEW!
  • Suspended and ventilated Teflon tube sockets with machined gold plated contacts.​​
  • Regulated voltage and current DC filament supply for 300B power tube eliminates hum and distortion and extends tube life.​
  • Premium Mullard 5AR4/GZ34 (reissued quality, matched) vacuum tube rectifier with surge protection circuitry.​ Premium Tung-Sol 6SN7GTB (reissued quality, matched) input/driver tube.​ Psvane 300B TII power tube (now standard at no extra cost).​​​
  • High gain 450 mV input circuit is ideal for passive Preamps or DACs.​ Zero negative feedback.​ Class-A auto-bias circuit.​​
  • US and international mains supplies: Selectable 120/240, 50/60 Hz Volt mains and 100/110/220, 50/60 Hz wiring special order. Dual fused.​​ Built to UL, CSA, CE safety standards.​
  • Dimensions: 10"W x 17"D x 9.25"H. One stereo pair = 4 chassis total, 92 lbs (42 kg) net.​ Machined aluminum isolation feet.
  • Specifications: 10 Watts RMS, 20 Hz ~ 20 kHz +/-0.2 dB. 7 Hz, 45 kHz -3 dB points. S/N 85 dBA. THD <0.5%, 1 Watt. Load Impedance 4/8/16 Ohms.​
  • Lab testing, run-in, and in-system sonic evaluation before shipment (40 hours).​
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  • ​​Designed and manufactured in the US by Triodecraft.​

  • Note: Input/driver tube shown in photos is Psvane brand.

    Customer Comments

    Sonic Impression:  A very three dimensional presentation, one is transported to the venue. Layers and layers of depth and sense of space including room echo. Keyboards and guitars are 'in the room.' Bell like sound of cymbals, snare drum rasp, and drum head ring. Double bass is dark and sonorous. Vocals are natural without strain. No solid state or pentode tube amp I have auditioned comes close. JS, Sedona AZ​

    It is important to me to know the parts quality in an audio product since this is what determines the best from the rest. I have learned that the key to a really great 300B amp is the quality of the "iron." Many companies use low grade generic transformers, chokes, electrolytic capacitors, and silicon parts that color the sound. These are the amps that are known for their syrupy mids, rolled-off highs, and woolly bass. The Triodecraft 300B avoids these pitfalls and guarantees the audio devotee the best sonic experience. AK, Tokyo Japan

    I auditioned the Triodecraft monoblock amplifiers at a friend's studio. In a word it was scary real! The left channel keyboards were right in front of me. The drummer on the right channel cracking the rims and I could tell they were Vic Firth sticks. The electric bass buzzed my chest and it was a Percy Jones' custom Ibanez. No amplifier in my experience has presented such a vivid and precise soundstage. Just add a good set of high efficiency speakers and you will be at the "club." RB, Los Angeles CA

    Ordering Information
    Price is for a stereo pair including power supplies. More than one set available (ongoing sale). See our Policies and our Free Shipping Offer. Learn More: Triodecraft Website

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    Return Policy
    Return Window

    Item can be returned within 14 days of receipt.

    General Terms

    Items must be returned in their original condition, with all included packing materials and no signs of use. Buyer assumes responsibility for all shipping return costs unless the item was not received as described.


    Buyer will receive a full refund in the original payment method less any shipping charges.

    Special Conditions

    Returns: Power amplifiers-We offer a 14-day in-home evaluation period that begins on the shipment delivery date. **Free Shipping: We refund the shipping cost of outbound international shipping after 14-days (evaluation period expiration) for non-returned products. Domestic US Sales: Free Outbound Shipping Offer. Ends on August 31, 2019.

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