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6J1 Tube Preamp Board vs Rockville TubeHead Headphone Amplifier

Buy the Rockville TubeHead if you want a finished, plug-in tube headphone amp with real power figures and a warranty. Buy the 6J1 board only if you are a builder who wants a bare assembled preamp board to mount in your own case and power yourself. The TubeHead is a complete product with a 6.35mm output, RCA and 3.5mm inputs, and a 12V supply; the 6J1 kit is a board with no case, no power supply and no headphone jack. Owners of the TubeHead describe a warm, clear sound and note the low noise floor; the 6J1 board gets praise for working as intended, but it is a DIY part, not a finished amp.

  • Choose the 6J1 board if you are building or modifying gear and want an assembled tube preamp board to wire into your own enclosure and power supply.
  • Choose the Rockville TubeHead if you want a ready-to-use tube headphone amplifier with inputs, a headphone jack and a power supply in the box.

Prices

  • 6J1 Tube Preamp Board: $14.73 at Amazon (checked today)
  • Rockville TubeHead Headphone Amplifier: $44.95 at eBay (checked today)
  • Difference: the 6J1 Tube Preamp Board is $30.22 cheaper than the Rockville TubeHead Headphone Amplifier today
6
6J-I Electron Valve Pre-amp DIY Tube Headphone amp Stereo Bile Preamplifier Board Buffer Effector DIY Kit

6J1 Tube Preamp Board

6J-I Electron Valve Pre-amp DIY Tube Headphone amp Stereo Bile Preamplifier Board Buffer Effector DIY Kit

$14.73at AmazonChecked 3 h ago
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Pros
  • Assembled board, so no component soldering on the board itself
  • 6J1 tube gives a warm tube preamp stage
  • Small board suits custom builds and modifications
  • Low cost of entry for a DIY project
Cons
  • No case, power supply or headphone jack
  • No published output power, THD or noise figures
  • Not usable as a headphone amp without extra parts
  • Unbranded, with no warranty stated
Rockville
TubeHead

Rockville TubeHead Headphone Amplifier

TubeHead

$44.95at eBayChecked 3 h ago
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Pros
  • Complete amp with case, jack, inputs and power supply
  • Published power at several headphone impedances
  • Low 0.03% THD and 106dB signal-to-noise ratio
  • Works with headphones from 16 to 600 ohms
  • Warranty card included
Cons
  • Tube rolling is limited to the 6K4 type
  • Single 6.35mm output, no balanced output
  • Modest power for hard-to-drive planar headphones

What separates them

6J1 Tube Preamp BoardRockville TubeHead Headphone Amplifier
What you getAn assembled 6J1 preamp board onlyA complete amplifier with case, 12V 1A supply, manual and warranty card
Headphone outputNone on the board; you must add a jack and wiring6.35mm headphone jack built in
InputsBoard-level input pads for DIY wiringRCA and 3.5mm line inputs
PowerNeeds an external supply you provide12V 1A DC supply included
Headphone load rangeNot specified for the boardRated 16 to 600 ohms, with output figures at 16, 32, 64, 120 and 300 ohms
Measured specsNo published THD, noise or crosstalk figures0.03% THD, 106dB S/N, 70dB crosstalk
AssemblyRequires soldering, mounting and case workPlug in and play
Tube6J1 pentode6K4 tube

Price history

$44.95$14.73
Oct 31Nov 10
  • 6J1 Tube Preamp Board: lowest $14.73 on Nov 10 at Amazon.
  • Rockville TubeHead Headphone Amplifier: lowest $32.00 on Nov 8 at Reverb; $44.95 on Nov 10.

Prices at every store

6J1 Tube Preamp Board

  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $14.73Free shippingChecked 3 h ago
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  • eBayNew

    Availability unknown

    $24.27Checked Oct 31
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Rockville TubeHead Headphone Amplifier

  • ReverbNew

    In stock

    $44.95Free shippingChecked 3 h ago
    Visit Reverb
  • Rockville AudioNew

    In stock

    $44.95Free shippingChecked 3 h ago
    Visit Rockville Audio
  • eBayNew

    In stockSold by audiosavings

    $44.95Free shippingChecked 3 h ago
    Visit eBay
  • AmazonNew

    Availability unknown

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    $44.95Free shippingChecked 3 h ago
    Visit Amazon

Also available at

  • eBayCheck price at eBay

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Specs compared

Spec6J1 Tube Preamp BoardRockville TubeHead Headphone Amplifier
UL ClassJ—
Number of Poles1—
Amp Range31 to 60A—
Voltage Rating600V AC/DC—
Connector TypePressure Plate—
Mounting StyleDIN-Rail—
Wire Size14 to 2 AWG—
Height4.80 in—
Width1.57 in—
Length3-1/2 in—
For Fuse Size2-3/8 in L x 1-1/16 in dia—
Short Circuit Current200 kA—
Show all 19 specsShow fewer specs
Spec6J1 Tube Preamp BoardRockville TubeHead Headphone Amplifier
Power Output—100mW@16O, 180mW@32O,112mW@64O,64mW@120O,27mW@3…
THD—0.03%
S/N Ratio—106dB
Gain—1.89 dB with 0.775Vrms input @ 32ohm impedance
Crosstalk—70 dB
DC Power Supply—12V 1A
Unit Weight—1.02lbs

What reviewers say

6J1 Tube Preamp Board

Feedback is very thin: one buyer calls it a nice product.

Pros
  • One buyer describes it as a nice product

Questions and answers

Which is better for a beginner?
The TubeHead. It arrives complete with a power supply and headphone jack, so there is nothing to wire. The 6J1 board needs a case, a power supply and a jack before it makes sound.
Can I use the 6J1 board as a headphone amp on its own?
No. It is a preamp board. You need to add a headphone output stage or jack wiring and a power supply, and mount it in an enclosure.
Which has more published specs?
The TubeHead. Rockville lists output power at five impedances, 0.03% THD, 106dB S/N and 70dB crosstalk. The 6J1 board lists none of these.
Will the TubeHead drive high-impedance headphones?
It is rated up to 600 ohms, but power drops at higher impedance: 27mW at 300 ohms. That is enough for most dynamic headphones but may be thin for demanding planar models.
Is the 6J1 board worth it over the TubeHead?
Only if you enjoy building. As a finished amp the TubeHead offers more for the same job. The 6J1 board makes sense as a part in a larger DIY project.
Which lasts longer?
Both use small signal tubes that wear over time and can be replaced. The TubeHead adds a warranty and a known tube type, which makes replacement easier.

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