Morrow Audio

Morrow Audio 300B1 monoblock power amplifiers

Morrow Audio 300B1 Monoblock Amplifiers

"The 300B1 provides low level detail in spades; revealing, holographic, tonal purity and REAL . The dynamics are fast and almost scary... crescendos explode, bass lines reach way down, cymbals shimmer, piano is thunderous--all the while maintaining the delicacy and separation of instruments and performers that are so crucial." Read more...

300B SET (single ended triode) design. SET's are noted for their natural sound, retaining more of the harmonic structure than is possible with push pull designs, which cancel out these harmonics. The trade off is lower power output. If your speakers are high efficient, SET's are the way to go for the best and most realistic sound presentation.

These specialty Morrow Audio amplifiers are hand made by Mike Morrow himself and incorporate the best sounding parts available. The amplifier is in another league when it comes to the natural and realistic sound presentation they offer. Please allow 4 to 8 weeks build time. You will be kept updated as the build progresses.

PAIR: $4300.00
Shipping Cost

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Product Description:

The  300B1 Monoblocks offered incorporate one of the best output transformers available (Electra-Print) as well as Teflon V-Cap capacitors. The V-Cap is the best  sounding capacitor in the world. There are 3 V-Caps in each monoblock. They are used in the coupling, cathode and bias bypass capacitor circuits. Cabinet incorporates a heavy gauge steel top plate painted black with Bombay-Mahogany stained wood base.

Other components incorporated in the design are ceramic tube sockets, oil power supply capacitors, Electra-Print output transformers, point-to-point wiring, teflon V-Cap capacitors throughout, Solan & Black Gate cathode capacitors and Tantalum, Riken and Dale resistors (All signal passing resistors are Tantalum). Wiring is solid silver and silver-coated copper with Teflon insulation.

 

"OK OK, I know its a little gushy, but these things ROCK!!  And I don't even listen to rock, mostly a classical nerd with nice female vocalists thrown in at times.  Nothing like a little Diana Krall on a rainy day."

 

The amplifiers are very fast and musical, non-electronic and natural sounding with a deep, layered soundstage, along with a razor sharp 3-D image. I am amazed at how real things sound, breathtakingly 3D. Singers seem to be in the room. The soundstage is so huge that it seem like you are listening to surround sound, with images floating behind, in front of and outside the speakers. The reason is the quality of parts chosen and the simple design, which allow every subtlety to come through, cueing the brain with locations of the instruments and singers. Read testimonials...

 

AC filament  supply on the 6SN7 and DC supply on the 300B insures a very quiet amplifier with a very low noise floor...all the details and subtleties of the music come through. Hum and noise is only .003 mv. Horns, Lowthers and other high efficiency speakers are dead quiet! This is a product which is built to last a lifetime, the quality and faithfulness in sound reproduction is unmatched.

 

"The Morrow 300B1 amps are large, but there is a good reason for that.  The electromagnetic fields don't interact, and the delicate input circuit is as far from the power supply as possible.  The amp is visually very beautiful, with a slight industrial edge to it, with all the screw caps on the top plate showing.  VERY nice build quality, just screams excellence."

 

What You Receive In The 300B1:

1. Hand built to order by Mike Morrow himself, please allow 4 to 8 weeks for build time.

2. High quality Teflon V-Cap is located between the 6SN7 plate and 300B grid. This is the best sounding capacitor in the world.

3. Point to point wiring...NO CIRCUIT BOARDS which degrade the sound!

4. Black top with "Bombay Mahogany" stained base and solid Granite face. 10" wide by 18" deep by 3" tall (Base).

5. V-Cap, Teflon capacitors used in the cathode circuits.

6. Oil filled power supply capacitors. No Electrolytic's in the power supply! Much better highs are obtained...more realistic sound presentation. 

7. Custom Electra-Print output transformers.

8. Solid silver 99.99% pure signal path wiring, cloth covered. All other wiring is high grade with Teflon insulation.

9. Audio Note Silver input jacks.

10. Audio Note Silver output binding post.

11. Solen cathode capacitors. 

12. Tantalum, Riken and Dale resistors. All signal passing resistors are Tantalum.

13. Tubes included...300B, 6SN7 and 5R4.

14. Ceramic tube sockets, gold plated connectors. Teflon socket upgrade is available.

15. Fuse protected.

16. 3 year warranty

"One night I played Brahms cello sonata, Yo Yo Ma on vinyl. VERY rich, deep cello tones, much more authority than the px25 amp I've been listening to for a couple of weeks. Then I just listened, very beautiful, gripping, DETAILED, I love it. There is something unique."

 

Features:

  • Output Power: 9.5 W (8ohm)
  • 100K Input Impedance
  • 120 or 220 VAC, fuse protected
  • 8 Ohm output (4, 16 Ohm upon request)
  • Frequency response 20 to 20kHz
  • Input sensitivity 250 mv
  • Hum and noise: Less than 300mv
  • Tubes included: 300B, 6SN7, 5U4
  • Shipping weight: 110 lbs in 2 boxes
  • Warranty: 3 years as described here
  • Dimensions: 10" W, 18" D, 7.5" H

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Solid granite front

Solid Granite face, solid Oak body.

Quality construction, best sounding parts. Newer versions have DC on the 300B filiment.
Hand built by Mike Morrow from the ground up.

Only the best sounding parts are incorporated
Beautiful, solid appearance, beautiful and realistic sound.

Top view of the 300B1 Monoblocks
The quality is not surpassed, built to last!

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